Article R3122-9 of the French Labour Code
The application for authorisation to assign workers to night shifts submitted to the Labour Inspector by the employer on the basis of Article L. 3122-21 shall provide detailed justification of: 1° The constraints specific to the nature of the activity or the operation of the company which make night work necessary, having regard to the requirements of continuity of economic activity or services of social utility ; 2° The fair…