Article R4532-77 of the French Labour Code
The project owner sets up an inter-company safety, health and working conditions committee when the worksite is expected to exceed 10,000 man-days and the number of companies, including self-employed workers and subcontractors, exceeds ten in the case of a building project or five in the case of a civil engineering project. This constitution is effective no later than twenty-one days before the start of the works.