In the cases provided for in article L. 7422-3, the Minister responsible for labour shall issue an order after obtaining the opinion of:
1° Either the competent departmental commissions mentioned in article R. 7422-1, when several departments are involved;
2° Or a national commission on working hours when the entire country is involved.
The composition of the national commission for working hours is set in each case by order of the minister responsible for labour.