Engineering and Construction Contract

Works Information Guidance

An NEC document
January 2012
NEC wishes to acknowledge and thank the NEC3 ECC Works
Information Guidance project team for their input to this guidance.
Members of the project team include:
M Garratt, NG Bailey
I Grifths, Horizon Nuclear Power
P Higgins, PD Consult Ltd
T Knee-Robinson, Davis Langdon
Nigel Shaw
NEC is a division of Thomas Telford Ltd, which is a wholly
owned subsidiary of the Institution of Civil Engineers (ICE),
the owner and developer of the NEC.
CONTENTS
Chapter 1 Introduction 1
Chapter 2 The status of Works Information 3
The function of Works Information 3
The relationship between Works Information and Contract Data 4
The relationship between Works Information and Site Information 4
The relationship between Works Information and pricing documents 5
Works Information as a contract document 6
Chapter 3 Drafting Works Information 7
Incorporation of standard specications 7
Examination of a typical traditional specication 7
Health and safety information 9
General drafting advice 10
Chapter 4 ECC references to Works Information 13
Chapter 5 Employers Works Information 19
Example Works Information Structure 20
Guidance and Checklist 21
Chapter 6 Works Information provided by the Contractor for his design 35

Chapter 1 Introduction
The purpose of this guide is to help users to produce Works Information for the NEC3
Engineering and Construction Contract (ECC).
The convention of using italics for terms which are identied in the Contract Data of
the ECC and capital initials for terms dened in the ECC has been used in this guide.
Good quality Works Information is vital to achieving better outcomes for projects and
reducing misunderstandings and disputes. Works Information should be prepared with
individual project requirements and the operation of the ECC in mind.
All NEC contracts refer to information which sets out what the Parties are required to
do under the contract. The obligation to work in accordance with that information is
set out in the conditions of contract.
The diagram below shows the relationship between the constituent parts of a contract
including the Works Information. Contract Data identies the documents forming
the contract. The conditions of contract refer to each part of the contract and require
information to be stated in them. The form of agreement may be used to record the
agreement between the Parties on the basis of the Contract Data, or the Parties may
rely on an exchange of correspondence to establish the contract.
Contract Data
ECC Documents
part two
part one
Site
Information
Prices
Activity Schedule or
Bill of Quantities
Form of Agreement
conditions of contract
core clauses
main Option clauses
secondary Option clauses
identifies
requires information
to be stated in
Works Information (Contractor s)
Works Information (Employer s)
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Information and documents required for the contract must be in the right part of the
contract. If documents are located in the wrong place, it may cause confusion and risk
that the documents are not properly incorporated. For example, information which
describes the works must be identied in the Works Information. The diagram shows
that Works Information is identied in Contract Data. Therefore, all documents and
information which describe the works or state constraints must be identied as Works
Information and listed in Contract Data. This includes information contained within
correspondence and minutes of meetings which describes the works to be provided.
The approach which results in the least uncertainty is to extract relevant information
from correspondence and minutes of meetings and properly integrate it in the Works
Information. Works Information will often consist of multiple documents and sections,
in which case a contents list should be provided.
The clarity achieved by this contract structure and the separation of its parts is helpful
to users and signicantly reduces ambiguity and the potential for disputes.
This guidance will help users to draft and assemble Works Information correctly.
Chapter 2 describes the status of Works Information and the relationship between
Works Information and the other parts of the ECC. Chapter 3 provides advice on draft-
ing and how to achieve clarity. Chapter 4 is a checklist of information to be provided
in Works Information, as required by the conditions of contract. Chapter 5 suggests an
outline structure, including a list of topics to be considered for inclusion in the Works
Information.
The requirement for good information describing the work or services to be provided
applies to all contracting systems. It is an objective of NEC to provide a contract which
is clear and simple and promotes effective management and delivery of the works.

ECC Works Information Guidance

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Chapter 2 The status of Works Information

The function of Works Information
Works Information is dened as
11.2(19) Works Information is information which either
.
species and describes the works or
.
states any constraint on how the Contractor Provides the Works
and is either
.
in the documents which the Contract Data states it is in or
.
in an instruction given in accordance with this contract.
Works Information should be a complete and precise statement of the Employers
requirements. If it is not, there is a risk that the Contactor will interpret it differently
from the Employers intention.
Works Information prepared by the Employer is separated from Works Information pre-
pared by the Contractor relating to his design. The Employers Works Information is
prepared rst and the Contractor uses this to prepare the information relating to his
design. The Employers Works Information has priority over the Contractors Works
Information under ECC subclause 60.1(1).
Works Information provided by the Employer includes
.
technical information, specications and drawings describing the works,
.
constraints on how the Contractor Provides the Works, including specic safety
requirements and
.
Employers requirements for work to be designed by the Contractor.
Works Information provided by the Contractor is particulars of the Contractors design
for works he is required to design.
The Contractors primary obligation under ECC is stated in subclause 20.1.
20.1 The Contractor Provides the Works in accordance with the Works Informa-
tion.
When this subclause is read in conjunction with subclause 11.2(19) and the following
subclauses, the importance of Works Information is clear.
11.2(2) Completion is when the Contractor has
.
done all the work which the Works Information states he is to do by the
Completion Date and . . . . . . .
11.2(5) A Defect is
.
a part of the works which is not in accordance with the Works
Information or . . . . . .
60.1 The following are compensation events.
(1) The Project Manager gives an instruction changing the Works Informa-
tion except
.
a change made in order to correct a Defect or
.
a change to the Works Information provided by the Contractor for his
design which is made either at his request or to comply with other
Works Information provided by the Employer.
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The conditions of contract make frequent reference to Works Information as illustrated
above and later in Chapter 4. Works Information is therefore central to the operation
of the contract.
Works Information should be drafted in accordance with the three key objectives of
NEC, namely exibility, clarity and stimulus to good management.
The Relationship between Works Information and Contract Data
Contract Data contains information needed to operate the contract, including the
choice of main and secondary Options. Contract Data is the type of information often
described in other forms of contract as the contract particulars or appendix. There are
two parts. Part one contains the information provided by the Employer and part two is
where the Contractors data and proposals are identied.
The ECC Guidance Notes contain detailed information on completion of the Contract
Data.
The information set out in the Contract Data is not Works Information or Site Informa-
tion, but it identies the documents which contain Works Information. The Employer
identies the documents which contain his Works Information in Contract Data part
one. The Contractor identies the documents which contain the Works Information for
his design in Contract Data part two. Where information is in non-documentary form
such as models, they should be identied and their availability and location stated.
Works Information should not contain information which repeats, contradicts or
creates an ambiguity with any information contained within Contract Data or with the
conditions of contract.
The following documents are identied within Contract Data and are not Works
Information
.
boundaries of the site,
.
Partnering Information (if Option X12 is used),
.
incentive schedule (if Option X20 is used),
.
matters to be included in the initial Risk Register,
.
information describing the Working Areas and
.
the programme (if required at tender stage).
A further distinction is that the Project Manager can instruct a change to Works
Information but cannot change Contract Data once the contract is formed.
The Relationship between Works Information and Site Information
The Contractors obligations regarding Works Information and Site Information are dif-
ferent. A clear separation between Works and Site Information is required. Site Infor-
mation describes the condition of the Site before work starts. Works Information
describes what is to be done on the Site.
Site Information is dened as follows
11.2(16) Site Information is information which
.
describes the Site and its surroundings and
.
is in the documents which the Contract Data states it is in.
Site is dened as
11.2(15) The Site is the area within the boundaries of the site and the volumes
above and below it which are affected by work included in this contract.

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Site Information, as with Works Information, is incorporated by reference to documents
listed in Contract Data. There are several distinctions between Site Information and
Works Information, for example
.
Site Information cannot be changed once the contract is formed.
.
Site Information is used to assess compensation events resulting from physical
conditions (subclauses 60.1(12) and 60.2).
.
Ambiguities or inconsistencies in the Site Information are resolved in favour of
the Contractor (subclause 60.3). This encourages full disclosure of information
on the condition of the Site.
Site Information may include the following
.
Subsoil investigation borehole records and test results.
.
Reports obtained by the Employer concerning the physical conditions of the Site
or its surroundings. This may include mapping, hydrographic data and
hydrological information.
.
References to publicly available information about the Site and surroundings,
such as published papers and interpretations of the geological survey.
.
Information about pipes, services and other objects below the surface of the Site.
.
Information about buildings, structures and other features (including machinery
adjacent to and on the Site).
Site Information is provided to help the Contractor to prepare his tender, to decide his
method of working and programme and prepare designs for which he is responsible.
Only factual information about the physical condition of the Site and its surroundings
is included in Site Information. Statements of opinion for example interpretation of
soil investigation surveys are not Site Information.
Some documents may contain both Works Information and Site Information. For
example, a document may show an existing structure alongside details of a new
structure. The following example shows how Site Information and Works Information
can be separated.
Works Information
Example Drawing List
Drawing No.
0100
0200
Description
New Factory Building
Existing Factory Building (proposed features)
Site Information
Example Drawing List
Drawing No.
0200
0300
Description
Existing Factory Building (existing features)
Existing Mains Services
The Relationship between Works Information and pricing documents
A clear distinction exists between Works Information and the pricing documents i.e.
the Activity Schedule or Bill of Quantities. Information in the pricing documents
explains the Prices and should not describe the works. The Contractors obligation is
to Provide the Works in accordance with the Works Information.
Statements about pricing of work should not be in the Works Information, as they
neither specify or describe the works, nor do they state constraints.
Information in the pricing documents does not change the obligation of the Contractor
to Provide the Works in accordance with the Works Information.
Chapter 2 The status of Works Information

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Works Information as a contract document
Some forms of contract use provisions creating a hierarchy or priority of docu-
mentation as a means of resolving ambiguities and inconsistencies in or between
documents. This is not the approach taken by NEC.
Priority clauses can interfere with the natural interpretation of documents as intended
by the Parties. Such an indiscriminate approach to resolving ambiguities and inconsis-
tencies can cause problems.
As explained in Chapter 1, the ECC describes the function of each document forming
part of the contract. This provides clarity as to the relevance and purpose of each
document in the contract. The conditions of contract then deal with any remaining
ambiguity or inconsistency in or between the documents.
The ECC deals with ambiguities and inconsistencies between the documents forming
the contract at subclause 17.1.
The Project Manager or the Contractor noties the other as soon as either becomes
aware of an ambiguity or inconsistency in or between the documents which are part of
this contract. The Project Manager gives an instruction resolving the ambiguity or
inconsistency.
Such an instruction from the Project Manager changing the Works Information is a
compensation event (subclause 60.1(1), second bullet) except where the instruction
is a
change to the Works Information provided by the Contractor for his design which is
made either at his request or to comply with other Works Information provided by the
Employer.
There is no priority of documents in ECC other than the hierarchy of Employers Works
Information compared to Contractors Works Information in subclause 60.1(1). Works
Information should be drafted to avoid any conicts or contradictions. Works Informa-
tion may consist of several documents drafted by different contributors. Ambiguities
or inconsistencies between documents should be corrected before the documents are
issued.

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Chapter 3 Drafting Works Information

Incorporation of standard specications
Works Information should be clear, complete and precise. Subjective terms should be
avoided to reduce the risk of misinterpretation and dispute.
Standard specications drafted for use on previous projects or with other standard
forms of contract should be reviewed and amended as appropriate, prior to incor-
poration. Drafting shortcuts such as All references to Specication shall mean Works
Information is likely to cause problems. Each reference should be checked for correct
use in relation to the duties and responsibilities of the Employer, Contractor, Project
Manager and Supervisor.
The duties of the Project Manager and the Supervisor are set out in the conditions of
contract.
Standard specications should be checked to ensure consistency with other parts of
the contract. For example, risk allocation varies from contract to contract and refer-
ences to Employers and Contractors responsibilities within standard specications
need to be checked.
In their publication Managing Reality (Thomas Telford Publishing, 2005), Mitchell and
Trebes give the following examples of specication ambiguity.
Examination of typical traditional specication
W.1 Water mains
W1.1 If, in the opinion of the Engineer, there is undue delay in the application of the
rst hydraulic test, or of any subsequent tests, or if any length of main should
ll the test, the Engineer may direct the Contractor to suspend main laying
operations until the length or lengths of main have been satisfactorily tested.
[Note subjective words, in the opinion of and satisfactorily, as well as the
uncertainty regarding the Engineers actions and the use of the term Engineer.]
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The substitution of Project Manager for Engineer as a drafting short-cut can
cause confusion for the following reasons.
.
The ECC Project Manager may not have the same duties as the Engineer in
other contracts. Some of the Engineers duties may be undertaken by the
Project Manager and some by the Supervisor or Adjudicator.
.
The ECC is more prescriptive on what can be done by the Project Manager on
certication than other standard contracts.
.
The acceptance of a communication by a Project Manager may differ from an
approval given by an Engineer in other contracts. ECC subclause 14.1 states
The Project Managers or the Supervisors acceptance of a communication from
the Contractor or of his work does not change the Contractors responsibility to
Provide the Works or his liability for his design.
W1.2 After satisfactory completion of pressure testing, each valve on and adjacent
to, the pipeline shall be examined to witness that the opening/closing
mechanisms function satisfactorily and are capable of functioning for their
designated purpose. Isolating valves shall be examined by opening and
closing the isolating gate three times. All tests and examinations shall be
witnessed by the Engineers staff and the Contractor shall provide a
witnessed certicate to this effect to the Engineer.
[Note subjective word satisfactorily and the use of the wrong terminology.
The witnessing of the tests should be by the Supervisor. If a preface had
been included in this specication to the effect that read Project Manager for
Engineer, then the Project Manager would have an obligation that is the
Supervisors under the conditions of contract and a conict would exist. Note
also that the Contractor is required to provide notication of results under
the conditions of contract and this Works Information paragraph requires an
extra obligation of the Contractor.]
W2 Swabbing of water mains
W2.1 Swabs will be provided by the Purchaser. Temporary pipework shall be
provided by the Contractor.
[Note wrong terminology in Purchaser, where it should refer to Employer.
Note also the vague nature of the statement. How many swabs will be
provided? Where will/can they be obtained from?]
W3 Water supply for testing and swabbing
W3.1 For the purpose of the hydraulic testing of water-retaining structures and
pipelines, the Purchaser will make available water from existing mains, at
times and rates of ow to be decided by the Purchaser and agreed with the
Engineer.
[Note wrong terminology: should be Project Manager and Employer, not
Purchaser and Engineer. Note also that if the Contractor were to do the test,
he is not involved in the decision of when the water is to be provided,
although this could affect his programme.]
W3.2 Water will be provided free of charge to the Contractor for the rst test. In
the event of any part of the work having to be retested the Contractor shall
be required to pay for the supply of water on a volume basis at the prevailing
rate of the Purchaser.
[Note wrong terminology: should be Employer, not Purchaser.]
G1 Standards of materials
G1.1 15th Statement of the DoE Committee on Chemicals and Materials of
Constructions for use in Public Water Supplies and Swimming Pools.
G1.2 The use of materials, including chemicals that do not meet the above
criteria, shall be subject to the approval of the Engineer.
[Note under the conditions of contract acceptance and not approval is the
terminology used. Also should be the Project Manager, not Engineer.]
G2 Disinfection of pipework and structures
Pipes, pumps and structures shall be disinfected in accordance with the
following procedure:

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(a) The Contractor shall provide, at least three weeks before carrying out the
disinfection process, a Method Statement to the Engineer for his Approval.
[Note that under the conditions of contract a method statement is part of the
Contractors programme. The Contractor submits his programme to the
Project Manager (not the Engineer) for acceptance (not approval). There are
several programme revisions provided for in the conditions of contract,
including where the Project Manager can ask for one at any time.]
(b) After satisfactory hydraulic testing, pipes, pumps, structures etc shall be
cleaned of all deleterious material.
[Note the use of vague words such as satisfactory. The expected results of
the test, as well as the details of how and when the test is to be carried out,
should be provided.]
(c) The volume to be disinfected shall be lled with chlorinated water at a
dose level of 2025mg/l free chlorine and left to stand for 24 hours.
Large structures may have all surfaces thoroughly scrubbed down with
heavily chlorinated water and the volume then lled with a lower dose level,
0.5mg/l chlorinated water and left for 24 hours.
(d) The chlorinated water shall be drained away and disposed of in a safe and
satisfactory manner. All necessary approvals for discharge shall be obtained
by the Contractor. De-chlorination will be necessary to ensure that free
chlorine discharged is below 0.1mg/l, where discharge is a watercourse, or
drain leading to a watercourse.
[Note the vague words safe, satisfactory and necessary. What is safe
and satisfactory to the Contractor could be different from the Project
Manager. Unless a published standard is quoted, the requirements should
be stated in the Works Information.]
(e) The volume shall then be relled with potable water and left a further 24 hours.
(f ) The Purchaser will take samples for bacteriological testing. The results of his
test will take a minimum of three working days to provide a conclusive test.
[Note the incorrect terminology by the use of Purchaser rather than Employer.
The Works Information is required to state who provides samples, materials
and facilities for testing. The criteria of the test should also be stated.]
(g) If test results are unsatisfactory to the Purchaser, the above procedure shall
be repeated until satisfactory results are achieved.
[Note: use of incorrect terminology Purchaser and satisfactory. The
uncertainty of this statement could leave the Contractor having difculties
pricing accurately, or potentially adding conservative amounts of risk into his
price.]
Health and safety information
Subclause 27.4 requires the Contractor to act in accordance with the health and
safety requirements stated in the Works Information. Further comment on this clause
is given in Chapters 4 and 5.
Chapter 3 Drafting Works Information

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Employers should consider how to deal with health and safety requirements and docu-
mentation carefully when preparing Works Information. The associated constraints on
how the Contractor Provides the Works should be included in the Employers Works
Information.
Many jurisdictions require health and safety risks to be evaluated by the Employer
and then communicated to the Contractor as part of the procurement process. It may
not be necessary to include the risk evaluation as a contract document, but it is
necessary to check for consistency between the health and safety information, Works
Information and Site Information.
General drafting advice
The following description of NEC drafting style will help users draft Works Information
and other contract documents clearly.
1. A basic objective of NEC contracts is that they should be clear and simple.
The drafting delivers clarity and simplicity of language. Simplicity also follows
from the design of the management processes in the contracts.
2. One of the objects of using simple language in the contracts is that they
should be easy for people whose rst language is not English to use. A further
advantage is that the contracts can be translated into other languages
accurately.
Vocabulary 3. Use the simplest possible words. Simple words have few syllables.
4. Do not use words which are not needed.
Sentences 5. Sentences should be as short as possible. Twenty words is ne. Never have
more than forty. Use several short sentences instead of one sentence with
several clauses.
6. Many statements are conditional. If this happens, the Contractor does this.
Put the condition rst, not last and use if, not when. If this happens, the
UK Specic illustration:
The Construction (Design and Management) Regulations 2007 requires the
preparation of Pre-Construction Information relating to health and safety and for
this information to be provided to the Contractor. This may contain information
which is both Works Information and Site Information. Care should be taken in
deciding whether and how to include the Pre-Construction Information in the
contract. Consider
.
whether the information is Works Information or Site Information (see
Chapter 2),
.
how changes and developments to the information will be administered
which changes can only be made by an instruction of the Project Manager
and which can be changed by the Contractor to suit his own proposals,
.
the legal requirement for Pre-Construction Information to be issued to the
Contractor and
.
the time difference between formation of the contract and the starting date
during which the Pre-Construction Information may change.
In most cases, clarity will be achieved by keeping the Pre-Construction Information
as a separate document. However, the Works Information must include informa-
tion from the Pre-Construction Information which describes the works or states
constraints and the Site Information must include or identify information which
describes the Site.

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Contractor does this. [not: The Contractor does this when this happens.] Use
when only if timing is implied as in subclause 36.4.
7. Use commas properly. The pause which a comma creates can help under-
standing.
Bullets 8. Bullets are used when a clause includes a list. Do not use bullets for short
lists with short descriptions. The following does not need to be bulleted:
The Contractor arranges for Hail to the Chief to be played by a brass band
outside the Project Managers ofce at 9 a.m. on
.
Mondays,
.
Wednesdays,
.
Fridays and
.
his birthday.
9. A useful check is that punctuation of bulleted sentences should work if the
bullets are removed. Bullets end with a comma except the last but one which
ends with and or or and the last which ends with a full stop. Do not put a
comma before and. And replaces the comma before the last item on a list
as above.
10. Whenever possible, put bullets at the end of a sentence. Having a bit more of
the sentence after a bulleted list is clumsy as the reader does not expect the
text and the sentence can become very long and not easy to understand.
11. Bullets are indented. Bullets within bullets should be avoided if possible. If
used, as in subclause 31.2, use a double indent.
Adjectives and Adverbs 12. Old-fashioned contracts use a lot of adjectives and adverbs. NEC contracts
use the absolute minimum, which is hardly any. This is perhaps the most
important drafting convention for NEC. Use an adverb or adjective only if it is
really unavoidable.
13. Verbs and nouns are usually precise, adverbs and adjectives are usually
imprecise. The Contractor does all urgent work quickly is easy to understand.
Unfortunately, you can argue about the meaning of urgent (adjective)
and quickly (adverb). The Contractor (noun), does (verb) and work (noun)
are precise. To make the point absurdly, George ate a hefty meal unhurriedly
is vague but not meaningless. George ate a meal of 42 mouthfuls in
21 minutes is boring but precise. Contracts are not intended to be a good
read. They have to state who does what in words of unarguable precision and
clarity.
14. Some adverbial phrases are as imprecise as adverbs, e.g. quickly in come
quickly is obviously an adverb. So, in effect, is as soon as you can in come
as soon as you can.
15. This text, for example, about extension of time, comes from clause 44(1) of
the ICE conditions fth edition, adverbs and adjectives in italics.
. . . . . . . . . . . . . . . . . . or exceptional adverse weather conditions or other special
circumstances of any kind . . . . . . . . . . . . . . . . . . . . . . . . . . . be such as fairly to entitle
the Contractor to an extension of time . . . . . . . . . the Contractor shall within 28
days after the cause of the delay has arisen or as soon thereafter as is
reasonable in all the circumstances deliver to the engineer full and detailed
particulars of any claim to extension of time . . . . . . . . . . . . . . . . . .
16. It is impossible to decide whether an extension of time should be given and, if
so, for how much, when and how described until the courts have decided what
the adjectives and adverbs mean.
17. NEC drafting requires the absolute minimum of adverbs and adjectives. Some
are innocuous as in subclause 65.2 which uses the adjective wrong as in
wrong forecast.
Clauses 18. Clauses should be as short as possible with no more than two sentences.
They should cover only one subject.
Chapter 3 Drafting Works Information

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Tenses 19. Use the present tense for all statements of what somebody must do or not do.
It is seldom necessary to use another tense. If the sky has fallen down, the
Project Manager decides what the Contractor will do uses three tenses. If the
sky falls down, the Project Manager decides what the Contractor does uses
only the present.
Capitals 20. Capital initials show that a term is dened in the contract. When drafting, test
that a denition is right by putting it into the sentences where the dened
term is used. These denitions are only abbreviations and must only be
abbreviations. If there is anything to say about the dened term, it has to be
in the clauses.
21. There are exceptions. Project Manager, Supervisor, Employer and Contractor
have capitals but are not dened.
Particular words 22. May in NEC means is allowed to as in the Supervisor may instruct . . . . . .
Do not use it to mean that something might happen.
23. Any can usually be deleted.
Multiple Alternatives 24. Either a, b, c or d. Bullet the alternatives if they are phrases of some length.

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Chapter 4 ECC references to Works Information

The following table identies where the conditions of contract refer to Works Informa-
tion. Works Information should provide the information required by the contract and
identify project specic requirements.
The references are in the order that they appear in the conditions of contract and
cross referenced to the model form provided in Chapter 5.
ECC
subclause
ref
Chapter 5 ECC subclause description Guidance on what should be
included in the Works
Information
11.2(2) WI 405,
410
Completion is when the Contractor has
.
done all the work which the Works
Information states he is to do by the
Completion Date and
.
corrected notied Defects which would
have prevented the Employer from
using the works and Others from doing
their work.
In order for the Project
Manager to decide that
Completion has occurred, the
Works Information must state
clearly and unambiguously
what work is to be done
before Completion.
11.2(5) A Defect is
.
a part of the works which is not in
accordance with the Works
Information or
.
a part of the works designed by the
Contractor which is not in
accordance with the applicable law
or the Contractors design which the
Project Manager has accepted.
See Chapter 1.
11.2(7) Equipment is items provided by the
Contractor and used by him to Provide
the Works and which the Works
Information does not require him to
include in the works.
11.2
(19)
Works Information is information which
either
.
species and describes the works or
.
states any constraints on how the
Contractor Provides the Works
and is either
.
in the documents which the Contract
Data states it is in or
.
in an instruction given in accordance
with this contract.
See Chapter 1.
20.1 The Contractor Provides the Works in
accordance with the Works Information.
See Chapter 1.
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ECC
subclause
ref
Chapter 5 ECC subclause description Guidance on what should be
included in the Works
Information
21.1 WI 305 The Contractor designs the parts of the
works which the Works Information
states he is to design.
Dene the parts of the works
which the Contractor is to
design.
This can be done in a number
of different ways. See Chapter
5 for further guidance.
21.2 WI 310 The Contractor submits the particulars of
his design as the Works Information
requires to the Project Manager for
acceptance. A reason for not accepting
the Contractors design is that it does
not comply with either the Works
Information or the applicable law.
The Contractor does not proceed with the
relevant work until the Project Manager
has accepted his design.
State any procedures which
the Contractor is to follow in
carrying out his design and
procedures for the
submission of designs for
acceptance by the Project
Manager and Others.
22.1 WI 335 The Employer may use and copy the
Contractors design for any purpose
connected with construction, use,
alteration or demolition of the works
unless otherwise stated in the Works
Information and for other purposes as
stated in the Works Information.
State any restriction or
additional purpose for which
the Employer may wish to use
and copy the Contractors
design.
25.1 WI 905 The Contractor co-operates with Others
in obtaining and providing information
which they need in connection with the
works. He co-operates with Others and
shares the Working Areas with Others as
stated in the Works Information.
Detail the activities of Others
within the Working Areas.
25.2 WI 1005,
1010
The Employer and the Contractor provide
services and other things as stated in
the Works Information. Any cost incurred
by the Employer as a result of the
Contractor not providing the services and
other things which he is to provide is
assessed by the Project Manager and
paid by the Contractor.
State the services and other
things that are to be provided
by the Employer and
Contractor.
27.4 WI 1105 The Contractor acts in accordance with
the health and safety requirements
stated in the Works Information.
State any health and safety
requirements for the project
which the Contractor must
follow.
31.2 WI 505 The Contractor shows on each
programme which he submits for
acceptance
.
the starting date, access dates, Key
Dates and Completion Date,
.
planned Completion,
.
the order and timing of the operations
which the Contractor plans to do in
order to Provide the Works,
.
the order and timing of the work of the
Employer and Others as last agreed
with them by the Contractor or, if not
so agreed, as stated in the Works
Information,
State any additional
information that the
Contractor is to show on the
programme. This may include
dates for submission of
designs and samples, dates
for information or actions by
the Employer and Project
Manager and the timing of any
test or inspection.
Any requirements for the
format of the programme
should be stated, including
the use of specic software

ECC Works Information Guidance

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ECC
subclause
ref
Chapter 5 ECC subclause description Guidance on what should be
included in the Works
Information
.
the dates when the Contractor plans
to meet each Condition stated for the
Key Dates and to complete other work
needed to allow the Employer and
Others to do their work,
.
provisions for
.
oat,
.
time risk allowances,
.
health and safety requirements and
.
the procedures set out in this
contract,
.
the dates when, in order to Provide the
Works in accordance with his
programme, the Contractor will need
.
access of a part of the Site if later
than its access date,
.
acceptances,
.
Plant and Materials and other things
to be provided by the Employer and
.
information from Others,
.
for each operation a statement of how
the Contractor plans to do the work
identifying the principal Equipment
and other resources which he plans to
use and
.
other information which the Works
Information requires the Contractor to
show on a programme submitted for
acceptance.
and the requirement for hard
or electronic copies. Any
requirements for resource or
nancial data in the
programme should also be
stated.
31.3 WI 600 Within two weeks of the Contractor
submitting a programme to him for
acceptance, the Project Manager either
accepts the programme or noties the
Contractor of his reasons for not
accepting it. A reason for not accepting
the programme is that
.
the Contractors plans which it shows
are not practicable,
.
it does not show the information which
this contract requires,
.
it does not represent the Contractors
plans realistically or
.
it does not comply with the Works
Information.
Refer to subclause 31.2
above.
35.2 WI 440 The Employer may use any part of the
works before Completion has been
certied. If he does so, he takes over a
part of the works when he begins to use
it except if the use is
.
for a reason stated in the Works
Information or
.
to suit the Contractors method of
working.
If the Employer requires to
use any part of the works
prior to Completion without
taking it over, describe the
part and set out the reason
for its use.
40.1 WI 705 The subclauses in this clause only apply
to tests and inspections required by the
Works Information or the applicable law.
Detail the tests and
inspections required, the
results expected and which
parties are involved in the
test and inspection process.
Chapter 4 ECC references to Works Information

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ECC
subclause
ref
Chapter 5 ECC subclause description Guidance on what should be
included in the Works
Information
40.2 WI 705 The Contractor and the Employer provide
materials, facilities and samples for
tests and inspections as stated in the
Works Information.
State the materials, facilities
and samples to be provided
by the Contractor and the
Employer for tests and
inspections and the timing of
these.
41.1 WI 705 The Contractor does not bring to the
Working Areas those Plant and
Materials which the Works
Information states are to be tested or
inspected before delivery until the
Supervisor has notied the Contractor
that they have passed the test or
inspection.
State the Plant and Materials
which are to be tested and
inspected before delivery to
the Working Areas, including
details of tests or
inspections.
45.1 WI 440 If the Contractor is given access in order
to correct a notied Defect but he has
not corrected it within its defect
correction period, the Project Manager
assesses the cost to the Employer of
having the Defect corrected by other
people and the Contractor pays this
amount. The Works Information is
treated as having been changed to
accept the Defect.
45.2 WI 440 If the Contractor is not given access in
order to correct a notied Defect before
the defects date, the Project Manager
assesses the cost to the Contractor of
correcting the Defect and the Contractor
pays this amount. The Works
Information is treated as having been
changed to accept the Defect.
60.1(5) WI 905 The Employer or Others
.
do not work within the times shown on
the Accepted Programme,
.
do not work within the conditions
stated in the Works Information or
.
Carry out work on the Site that is
not stated in the Works
Information.
Refer to subclauses 25.1 and
25.2
60.1(16) WI 705 The Employer does not provide
materials, facilities and samples for
tests and inspections as stated in the
Works Information.
Refer to subclause 40.2.
71.1 WI 1305 The Supervisor marks Equipment, Plant
and Materials which are outside the
Working Areas if
.
this contract identies them for
payment and
.
the Contractor has prepared them for
marking as the Works Information
requires.
State the requirements for
marking Equipment, Plant
and Materials which are
outside the Working Areas by
the Supervisor, for payment
and transfer of title to the
Employer. The Works
Information should state
which items are to be
prepared for marking and
how this is to be done.

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ECC
subclause
ref
Chapter 5 ECC subclause description Guidance on what should be
included in the Works
Information
73.2 WI 1310 The Contractor has title to materials
from excavation and demolition only as
stated in the Works Information.
The Works Information should
state which materials arising
from excavations and
demolitions the Contractor
has title to.
C, D and
E 11.2
(25)
WI 1405,
1410
Disallowed Cost is cost which the Project
Manager decides
.
is not justied by the Contractors
accounts and records,
.
should not have been paid to a
Subcontractor in accordance with his
contract,
.
was incurred only because the
Contractor did not
.
follow an acceptance or
procurement procedure stated in
the Works Information or
.
give an early warning which this
contract required him to give
and the cost of
.
correcting Defects after Completion,
.
correcting Defects caused by the
Contractor not complying with a
constraint on how he is to Provide the
Works stated in the Works
Information,
.
Plant and Materials not used to
Provide the Works (after allowing for
reasonable wastage) unless resulting
from a change to the Works
Information,
.
resources not used to Provide the
Works (after allowing for reasonable
availability and utilisation) or not
taken away from the Working Areas
when the Project Manager requested
and
.
preparation for and conduct of an
adjudication or proceedings of the
tribunal.
State any acceptance or
procurement, procedures to
be followed by the Contractor.
State any constraints on how
the Contractor is to Provide
the Works.
This is relevant to Options C,
D and E where payment to
the Contractor is based upon
Dened Cost.
F 11.2
(26)
WI 1405,
1410
Disallowed Cost is cost which the Project
Manager decides
.
is not justied by the accounts and
records provided by the Contractor,
.
should not have been paid to a
Subcontractor in accordance with his
contract,
.
was incurred only because the
Contractor did not
.
follow an acceptance or
procurement procedure stated in
the Works Information or
.
give an early warning which this
contract required him to give or
.
is a payment to a Subcontractor for
.
work which the Contract Data states
that the Contractor will do himself or
.
the Contractors management.
State any acceptance or
procurement, procedures to
be followed by the Contractor.
This is relevant to Option F
where payment to the
Contractor is based upon
Dened Cost.
Chapter 4 ECC references to Works Information

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subclause
ref
Chapter 5 ECC subclause description Guidance on what should be
included in the Works
Information
C, D, E
and F
52.2
WI 1505 The Contractor keeps
.
accounts of his payments of Dened
Cost,
.
proof that the payments have been
made,
.
communications about and
assessments of compensation events
for Subcontractors and
.
other records as stated in the Works
Information.
Detail any other records to be
kept by the Contractor.
X4.1 WI 1600 If a parent company owns the
Contractor, the Contractor gives to the
Employer a guarantee by the parent
company of the Contractors
performance in the form set out in the
Works Information. If the guarantee was
not given by the Contract Date, it is
given to the Employer within four weeks
of the Contract Date.
Set out the form of parent
company guarantee required.
X13.1 WI 1700 The Contractor gives the Employer a
performance bond, provided by a bank or
insurer which the Project Manager has
accepted, for the amount stated in the
Contract Data and in the form set out in
the Works Information. A reason for not
accepting the bank or insurer is that its
commercial position is not strong
enough to carry the bond. If the bond
was not given by the Contract Date, it is
given to the Employer within four weeks
of the Contract Date.
Set out the form of
performance bond required.
X14.2 WI 1800 The advanced payment is made either
within four weeks of the Contract Date
or, if an advanced payment bond is
required, within four weeks of the later of
.
the Contract Date and
.
the date when the Employer receives
the advanced payment bond.
The advanced payment bond is issued
by a bank or insurer which the Project
Manager has accepted. A reason for not
accepting the proposed bank or insurer
is that its commercial position is not
strong enough to carry the bond. The
bond is for the amount of the advanced
payment which the Contractor has not
repaid and is in the form set out in the
Works Information. Delay in making the
advanced payment is a compensation
event.
Set out the form of advanced
payment bond required.

ECC Works Information Guidance

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Chapter 5 Employers Works Information

There are many different ways to structure Works Information.
A straightforward Works Information structure is suggested in the NEC3 ECC Guidance
Notes. This outline generally follows the sequence in which subjects arise within the
conditions of contract. Many good Works Information documents have been compiled
using this structure as a guide.
The example Works Information structure in this Chapter does not follow the order in
which subjects appear in the conditions of contract. Instead it is an arrangement of
topics for describing the works, owing from general explanations and requirements to
specic details. This structure also permits the voluminous documents (such as work
specications) to be included as appendices to make navigation and digestion of
other Works Information sections easier.
Guidance is provided for each Works Information section. This includes a checklist of
topics to help users prepare a complete statement of the Employers requirements.
The checklist provides a list of topics which might need to be included most project
will not use all items.
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Example Works Information Structure
The numbering used below is indicative.
Section Works Information (Employers)
WI 100 Description of the works
WI 200 General constraints on how the Contractor Provides the Works
WI 300 Contractors design
WI 400 Completion
WI 500 Programme
WI 600 Quality assurance
WI 700 Tests and inspections
WI 800 Management of the works
WI 900 Working with the Employer and Others
WI 1000 Services and other things to be provided
WI 1100 Health and safety
WI 1200 Subcontracting
WI 1300 Title
WI 1400 Acceptance or procurement procedure (Options C, D, E and F)
WI 1500 Accounts and records (Options C, D, E and F)
WI 1600 Parent company guarantee (Option X4)
WI 1700 Performance bond (Option X13)
WI 1800 Advanced payment bond (Option X14)
WI 1900 Low performance damages (Option X17)
WI 2000 Employers work specications and drawings

ECC Works Information Guidance

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Guidance and Checklist
This relates to the example Works Information structure shown above. Guidance relat-
ing to each Works Information section is provided in the grey boxes. A checklist of
optional topics is also provided.
WI 100 Description of the works
Provide a general description of the work to be carried out under the contract. Do
not repeat the denition of the works.
The general description should be consistent with the description in Contract Data
part one, and identify the outline scope of the works to be provided. A general
description of the Contractors design responsibility may be included here. A
detailed description is included in section WI 300.
The Employers overall objectives for the project may also be stated, so that the
Contractor understands them and can work with the Employer to achieve them.
A description of works to be undertaken by the Employer or Others is in section WI 900.
Checklist Explanation
WI 105 Description of the works As above.
WI 110 Project objectives Explain why the project is being undertaken.
Specic objectives may include outcomes on
safety, quality, time and functionality.
WI 200 General constraints on how the Contractor Provides the Works
State any general constraints on how the Contractor Provides the Works, which are
not covered by other Works Information sections.
If project objectives are included, state the requirements imposed on the
Contractor in helping to achieve them.
Constraints may include the checklist topics listed below. Constraints are
restrictions on how the Contractor Provides the Works, not issues related to cash
ow, funding or other requirements which conict with the conditions of contract.
Checklist Explanation
WI 205 General constraints Examples of constraints.
.
Use of the Site.
.
Access to the Site.
.
Deliveries.
.
Noise and vibrations.
.
Working hours,
.
Parking.
.
Use of cranes.
.
Use (or non-use) of explosives.
.
Restrictions on the use of hazardous materials.
.
Storage of fuel and chemicals.
.
Pollution, ecological or environmental impacts.
.
Archaeological requirements.
.
Interfaces between the works and existing things.
.
Occupied premises and users.
.
Employer specic policies and procedures.
.
Constraints imposed to meet the requirements
of Others (for example funders).
Chapter 5 Employers Works Information

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Checklist Explanation
WI 210 Condentiality Condentiality and publicity restriction, and any
acceptance procedures.
WI 215 Security and protection
of the Site
Security requirements for the Site and protection
of the public.
WI 220 Security and
identication of people
Security, vetting and identication of people
working on or visiting the Site.
Requirements for people visiting Site.
WI 225 Protection of existing
structures and services
Specic requirements for the protection of
existing structures, services, mains, trees and
other plants. Requirements for maintenance of
existing services. Procedures for working on
existing structures and services.
Refer to Site Information for location of existing
things to be protected or procedures for
identifying them.
WI 230 Protection of the works Specic requirements for the protection of the
works against damage.
WI 235 Cleanliness of roads Requirements agreed with authorities for
protecting and cleaning of access roads to the
Site.
WI 240 Trafc management Requirements and procedures for management of
trafc, road closures and public highways.
Communication and information requirements.
WI 245 Condition survey Condition surveys to be carried out by the
Contractor and any associated reinstatement
works.
WI 250 Consideration of Others Restrictions on work to avoid disturbance to the
general public or occupiers of adjacent premises.
WI 255 Industrial relations Specic requirements for the Contractor to comply
with any industrial relations policies.
WI 260 Control of site
personnel
Requirements for control of people working on or
visiting Site.
Permits and licences (for example permits to
work).
WI 265 Site cleanliness Keeping the Site clean and tidy.
WI 270 Waste materials Removal of waste and restrictions on the disposal
of waste material. Requirements for recycling.
WI 275 Deleterious and
hazardous materials
Restrictions on the use of deleterious and
hazardous materials.

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WI 300 Contractors design
Dene the parts of the works which the Contractor is to design. The ECC is exible
in this respect. The responsibility for design can be described in a number of
different ways, but in all cases, the part to be designed by the Contractor must be
clearly identied. If the Employer carries out most of the design, a list of items
designed by the Contractor may be stated. If the Contractor carries out most of the
design, a list of items designed by the Employer may be stated.
State the procedures which the Contractor is to follow in carrying out his design
and procedures for the submission of design for acceptance by the Project
Manager and Others. Identify which parts of the design are required to be
submitted to the Project Manager for acceptance.
Checklist Explanation
WI 305 Design responsibility
ECC 21.1
As above.
WI 310 Design submission
procedures
ECC 21.2
As above.
WI 315 Design approvals from
Others
ECC 27.1
State any requirement for design checks and
approvals by Others.
WI 320 Employers
requirements
Identify the Employers requirements for the
parts of the works to be designed by the
Contractor. Examples of this information are
listed below.
.
Specications, including reference to relevant
standards.
.
Design standards and codes of practice.
.
Size and/or space limitations.
.
Loading and capacity requirements.
.
Operational performance requirements and
design life.
.
Planning drawings and planning consents.
.
Energy consumption targets
.
Environmental standards
.
Sustainability requirements
.
Design quality evaluation criteria
.
Employers design reports
.
Employers standard design guidance.
WI 325 Design co-ordination State what responsibility the Contractor has for
co-ordination with Others in preparing his design
and any responsibility for the coordination of
design by Others.
WI 330 Requirements of Others Explain the Contractors responsibility for
obtaining and satisfying any necessary authority
requirements (for example planning ofcials or
government departments).
WI 335 Copyright/licence
ECC 22.1
State any purpose for which the Employer may
wish to use and copy the Contractors design if it
is not as stated in subclause 22.1.
Chapter 5 Employers Works Information

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Checklist Explanation
WI 340 Access to information
following Completion
.
State the Employers requirements for access
to information once the Defects Certicate is
issued including timescale for the retention of
information after Completion. Consider any
need for computer software source code for
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WI 400 Completion
Completion is when the Contractor has done all the work which the Works
Information states he is to do by the Completion Date and corrected notied
Defects which would have prevented the Employer from using the works and
Others from doing their work. If the work which the Contractor is to do by the
Completion Date is not stated in the Works Information, then Completion is when
the Contractor has done all the work necessary for the Employer to use the works
and for Others to do their work.
In order for the Project Manager to decide that Completion has occurred, the Works
Information must state clearly and unambiguously what work is to be done before
Completion.
Examples might include successful passing of stated key tests and provision of
as-built documentation. Refer to section WI 700 for test and inspection
requirements.
An alternative approach could be in the form of a statement of which part of the
works can remain incomplete at the Completion Date.
It may also be useful to state the procedures to be adopted to ensure a smooth
transition from construction to operation of the asset. This may also include
procedures leading up to Completion and between Completion and the Defects
Date.
Checklist Explanation
WI 405 Completion denition
ECC 11.2(2)
Work to be done by the Completion Date.
WI 410 Sectional Completion
denition
ECC X5.1 (Option X5)
As above for each Sectional Completion.
WI 415 Training Training required for the Employer or Others and
associated timescales.
WI 420 Final clean Details of nal clean, removal of temporary
structures, materials, protection and tools.
WI 425 Security Details of security arrangements and handover at
Completion.
WI 430 Correcting Defects Procedures for access for the correction of any
Defects and process for liaison with the Project
Manager and Employer.
WI 435 Pre-Completion
arrangements
Requirements for preparing for take over.
WI 440 Take over
ECC 35.2
Identify parts of the works that the Employer
requires to use prior to Completion without taking
it over. Details to include
.
location of parts of the works and
.
reasons for use.
Contractors access provision during period of
use.
Chapter 5 Employers Works Information

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WI 500 Programme
State any information additional to the requirements of ECC subclause 31.2 that
the Contractor is to include in the programme. This may include dates for
submission of designs and samples, dates for information or actions by the
Employer and Project Manager, and the timing of any test and inspection.
Any requirements for the format and content of the programme should be stated,
including the use of specic software (if necessary) and the requirement for hard
or electronic copies.
Checklist Explanation
WI 505 Programme
requirements
ECC 31.2
As above.
WI 510 Programme
arrangement
Any specic arrangement of the programme,
including any requirement for the programme to
be produced in levels (summary level to detail
level).
WI 515 Methodology statement Particular requirements for methodology
statements, including any specic requirement for
resource information.
WI 520 Work of the Employer
and Others
The order and timing of the work of the Employer
and Others to be included in the programme and
information to be provided. Refer as necessary to
sections WI 905 and WI 910.
WI 525 Information required A schedule of information to be provided, who it is
to be provided by, and the date by which it is to
be provided.
WI 530 Revised programme Any specic requirements for the submission of
revised programmes, such as an explanation of
changes.

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WI 600 Quality management
Detail the requirements for quality control and management.
Checklist Explanation
WI 605 Samples State the materials and samples required
including any procedures for submission and
acceptance.
WI 610 Quality statement Any requirement for a quality statement from the
Contractor.
WI 615 Quality management
system
Any requirements for a quality management
system, including accreditations or legislative
standards.
WI 700 Tests and inspection
Detail the tests and inspections required and which parties are involved in the test
and inspection process. Tests and inspections may also be detailed within work
specications. Ensure consistency of drafting between this section and the
contents of WI 2000.
Tests and inspections might be required for
.
Samples of plant or materials provided by the Contractor.
.
Samples of workmanship.
.
Equipment, Plant and Materials outside the Working Areas before payment or
delivery.
.
Work in the Working Areas.
.
Plant and Materials, and work prior to Completion (see WI 400).
.
Plant and Materials, and work after take over but before the defects date.
.
System tests.
.
Computer software tests.
.
Performance tests.
State the materials, facilities and samples to be provided by the Contractor and the
Employer for tests and inspections, and the timing of these.
State the Plant and Materials which are to be tested and inspected before delivery to
the Working Areas, including details of the test or inspection.
Any test or inspection of Equipment, Plant and Materials outside the Working Areas
which have to be passed before marking by the Supervisor for payment should also
be stated.
If secondary Option X17 Low performance damages applies, detail the relevant
performance tests.
State any requirements for commissioning or performance tests in this section, in
the same way that other tests and inspections are described.
Further guidance is in the NEC3 ECC Guidance Notes.
Checklist Explanation
WI 705 Tests and inspections
ECC 40.1
ECC 40.2
ECC 41.1
ECC 60.1(16)
Consider the following checklist for test and
inspection details.
.
Objective, procedure and standards to be used.
.
When they are to be done.
.
Where they are to be done.
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Checklist Explanation
.
Who does the tests, and who is in attendance.
.
Testing and inspection method.
.
The Equipment required and who provides it.
.
Access arrangements.
.
Information or instructions required to be
provided.
.
Materials, facilities and samples to be provided.
.
Involvement of specialists.
.
Acceptable results and deviations.
.
Test environment.
.
Documents to be provided before and after the
test.
.
Whether or not authorisation to proceed to the
next stage of the work depends in the test
results.
WI 710 Management of tests
and inspections
Consider the requirement for a test and
inspection schedule, containing all relevant
information.
State the procedures for submission and review.
WI 715 Covering up completed
work
State timescales for the covering up of works
which have been tested.
WI 720 Supervisors procedures
for inspections and watching
tests
State any inspection procedures required by the
Supervisor.

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WI 800 Management of the works
The Contract Data identies the Employer, Project Manager, Supervisor and
Contractor and states what each is required to do. It is important, in using this
section, not to contradict these obligations and duties. If any of their duties are
delegated to Others, the extent of the delegation should be set out.
The ECC establishes a procedural framework based on good project management
practice. It may be helpful to detail the communication procedures required to
support this.
This may include a framework of regular meetings, attendees required and
outputs. Explain how people will be involved in the management of the works and
how communications are to be managed. Consider the use of a chart setting out
the roles and responsibilities of the various parties involved.
State whether an internet based collaboration tool or other electronic
communication system is to be used.
Checklist Explanation
WI 805 Project team Others As above.
WI 810 Communications State any communication procedures which the
Contractor is required to follow. Consider the
following.
.
Meetings, attendees and meeting records.
.
Reporting requirements (e.g. progress reports).
.
Information requirements.
.
Electronic systems and communications.
.
Use of standard forms and templates.
.
Terminology and abbreviations.
Chapter 5 Employers Works Information

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WI 900 Working with the Employer and Others
Detail the activities of Others within the Working Areas.
The Contractor is required to co-operate with Others in obtaining and providing
information which they need in connection with the works. State any requirements
that have been agreed with Others.
Checklist Explanation
WI 905 Sharing the Working
Areas with the Employer and
Others
ECC 25.1
ECC 60.1(5)
Provide a list of activities to be undertaken,
explaining the following.
.
What is being done.
.
Who is doing it.
.
When it is being done, and for how long.
.
Where it is being done.
.
How the Contractor is to co-operate and share
the Working Areas.
WI 910 Co-operation Identify known information requirements, for the
Contractor to obtain from Others or provide to
Others, and timing.
WI 915 Co-ordination State how the Contractor is to liaise with the
Employer and Others for the co-ordination of
works and access.
WI 920 Authorities and utilities
providers
Identify works to be carried out by authorities and
utilities providers. State the responsibility for
enquiry, management, procurement, provision of
notices and payment.

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WI 1000 Services and other things to be provided
State the services and other things that are to be provided by the Employer for use
by the Contractor, and by the Contractor for use by the Employer, Project Manager
or Others. Identify who they are provided for. It is not necessary to list things that
the Contractor requires for his own use to Provide the Works.
State any requirements for quality and maintenance of services to be provided.
Checklist Explanation
WI 1005 Services and other
things for the use of the
Employer, Project Manager or
Others to be provided by the
Contractor
ECC 25.2
May include the following.
.
Accommodation.
.
Meeting rooms.
.
Storage facilities.
.
Catering.
.
Medical facilities and rst aid.
.
Recreation.
.
Sanitation.
.
Security.
.
Copying.
.
Telephone, fax, radio or CCTV.
.
Computer equipment and services.
.
Sign boards and other signage.
.
Safety equipment and services.
.
Fences, screens and hoardings.
.
Postage.
.
Maintenance of access roads.
.
Temporary facilities.
.
Utilities, e.g. water and power.
.
Meter readings.
WI 1010 Services and other
things to be provided by the
Employer
ECC 25.2
Same checklist as above. Consider the following
also.
.
Access to the Site.
.
Space for accommodation.
.
Plant and Materials.
Chapter 5 Employers Works Information

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WI 1100 Health and safety
State any health and safety requirements for the project which the Contractor
must follow, in addition to the requirements of law.
Refer to Chapter 4 for guidance on the inclusion of health and safety information
in Works Information and Site Information.
Checklist Explanation
WI 1105 Health and safety
requirements
ECC 27.4
Details of any additional health and safety
requirements for the project, all which may
include the following.
.
Employers safety requirements.
.
Reporting requirements.
.
Safety management, supervision and
qualications.
.
Management of Subcontractors.
.
Drug and alcohol policy.
.
Site induction procedures.
WI 1110 Method statements Detail the operations for which the Contractor is
required to submit method statements and risk
assessments to the Project Manager for
acceptance.
WI 1115 Legal requirements If any health and safety duties are required by
law, state who will perform them.
WI 1120 Inspections State any requirement for review and inspection
of Contractors health and safety procedures by
the Project Manager.
WI 1200 Subcontracting
The Contractor may subcontract work using an NEC contract. Any restrictions on
the Contractor subcontracting work need to be set out.
The ECC does not provide for nomination of subcontractors, for the reasons
explained in the NEC3 ECC Guidance Notes. Alternatives to achieve similar
objectives are
.
make the Contractor responsible for all work; he may then subcontract parts
and the Project Manager retains some control over the identity of the
Subcontractors using ECC clause 26 or
.
provide for separate contracts, with the Project Manager managing the time and
physical interfaces between them.
Checklist Explanation
WI 1205 Restrictions or
requirements for subcontracting
State any restrictions and additional procedures
which the Contractor must follow.
WI 1210 Acceptance procedures
ECC 26.3
ECC 11.2(25) Options C, D and E
ECC 11.2(26) Option F
State any specic submission and acceptance
procedures for proposed subcontracts not based
upon an NEC contract. The basic requirement for
submission and acceptance is dealt with at
subclause 26.3.

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WI 1300 Title
State the requirements for marking Equipment, Plant and Materials which are
outside the Working Areas by the Supervisor, for payment and transfer of title to
the Employer. The Works Information should state which items are to be prepared
for marking, and how this is to be done. Identify any tests which must be passed
before items are accepted for marking.
The Works Information should state which materials arising from excavations and
demolitions the Contractor has title to.
Checklist Explanation
WI 1305 Marking
ECC 71.1
As above.
WI 1310 Materials from
excavation and demolition
ECC 73.2
Decide the title of materials from excavation and
demolition. State whether the Employer wishes to
salvage any such materials, and if so where they
are to be delivered to or collected from, and by
whom.
WI 1400 Acceptance or procurement procedure (Options C, D, E and F)
State any acceptance or procurement procedures which apply in addition to the
constraints set out within section WI 1210. This is relevant to Options C, D, E and
F where payment to the Contractor is based upon Dened Cost. The denition of
Disallowed Cost refers to acceptance and procurement procedures stated in the
Works Information.
WI 1500 Accounts and records (Options C, D, E and F)
Detail any records to be kept by the Contractor, in addition to those listed in
subclause 52.2.
Checklist Explanation
WI 1505 Additional Records
ECC 52.2 (Options C, D, E and F)
List the additional records to be kept by the
Contractor. This may include the following.
.
Timesheets and Site allocations sheets.
.
Equipment records.
.
Forecasts of the total Dened Cost.
.
Specic procurement and cost reports.
Dene the format and presentation of records to
be kept.
Chapter 5 Employers Works Information

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WI 1600 Parent company guarantee (Option X4)
Include the form of parent company guarantee required.
WI 1700 Performance bond (Option X13)
Include the form of performance bond required.
WI 1800 Advanced payment bond (Option X14)
Include the form of advanced payment bond required.
WI 1900 Low performance damages (Option X17)
State the detailed requirements, performance standards and required tests,
relating to any performance levels stated in the Contract Data for Option X17, if
not already stated in section WI 705.
WI 2000 Employers work specications and drawings
Include here the detailed work specications and drawings which describe the
works. A contents list may be provided or the documents themselves may be
included or both.
Guidance for including work specications is in Chapter 3.
Checklist Explanation
WI 2005 Employers work
specication
Contents list or documents or both.
WI 2010 Drawings Contents list or documents or both.

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Chapter 6 Works Information provided by the Contractor for his design

The purpose of this section of Works Information is to include the Contractors
proposals and design details for works which he is to design. This may include Plant
and Materials, workmanship specications, details and drawings. A contents list may
be provided or the documents themselves may be included, or both.
Note that, where particulars of the Contractors design are to be submitted for
acceptance during the contract under subclause 21.2, these submissions form part
of the Contractors Works Information. In that case, this information will change over
time.
Works Information prepared by the Employer is separated from any Works Information
prepared by the Contractor relating to his design. The Contractor cannot prepare his
Works Information until the Employers Works Information has been prepared.
There should be no ambiguity or inconsistency between the Contractors Works
Information and the Employers Works Information.
Care should be taken where the Contractor has offered an alternative proposal to
the Employers Works Information. If the Employer decides to accept the alternative
proposal, the Employers Works Information must be changed. There are two options
for the Employer in this situation
.
if the Employer assumes design responsibility for the alternative proposal, then
the Employers Works Information is changed to incorporate it. It is not included
within the Contractors Works Information, or
.
if the Contractor retains design responsibility for the alternative proposal, then
the Employers Works Information is changed to remove any redundant or
conicting content, and the alternative proposal is included in the Contractors
Works Information.
Note that the Employers Works Information is treated as having priority over the
Contractors Works Information under subclause 60.1(1).
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