Article L1235-10 of the French Labour Code
In undertakings with at least fifty employees, where the redundancy project concerns at least ten employees within the same thirty-day period, any redundancy carried out in the absence of any decision relating to validation or homologation or where a negative decision has been issued shall be null and void. In the event of cancellation of a validation decision referred to in Article L. 1233-57-2 or a homologation decision referred to…