Many of the film's actors got their start through stand-up comedy, namely François-Xavier Demaison, Elie Semoun, Thomas Ngijol and Francis Perrin.
One of the most complicated scenes to shoot was the one where Joanna (Virginie Efira) is attempting to catch her sketches before they fall in a fountain.
Screenwriter Luc Bossi was inspired by a story a friend told him of how his wife took the blame for a speeding charge, pretending she was the driver so that her husband wouldn't have points taken off his license, which subsequently caused her a number of problems with the police. From this, Bossi imagined the story of a man who brought bad luck to the women he dated.
Screenwriters Luc Bossi and Laurent Turner enjoyed working together so much they quickly re-teamed for the thriller La proie (2011). Their method involves discussing the story together, then having Turner write a draft, after which Bossi goes over it, correcting it, adding new scenes, removing others, and handing it back to Turner so that he goes over it and so on until the two are satisfied and send the script to the producer and director.
While he admits that sometimes, superb unexpected things can happen during a shoot, Nicolas Cuche doesn't believe in improvisation as a rule, due to comedy being very rigorous. As such, he didn't leave much time out for it during filming.