Article L1321-3 of the French Labour Code
The internal regulations may not contain : 1° Provisions contrary to the laws and regulations and to the stipulations of the collective labour agreements applicable in the company or establishment; 2° Provisions that restrict personal rights and individual and collective freedoms in a way that is neither justified by the nature of the task to be performed nor proportionate to the aim pursued; 3° Provisions that discriminate against employees in…