Article L7343-41 of the French Labour Code
I.-A collective agreement of indefinite duration may be terminated by the signatory parties. In the absence of an express stipulation, the period of notice that must precede termination is three months. The other signatories to the agreement are notified of the denunciation by its author. It is filed under the conditions provided for in article L. 7343-35. II -Where the denunciation is made by all the signatories representing the employees…