When the employees mentioned in article L. 2512-1 exercise the right to strike, the concerted cessation of work is preceded by a notice.
The notice shall be issued by a representative trade union organisation at national level, in the professional category or in the company, body or department concerned.
It specifies the reasons for the strike.
The notice must be sent five clear days before the strike is due to start to the hierarchical authority or to the management of the establishment, company or organisation concerned. It shall state the geographical area and time of commencement, as well as the limited or unlimited duration of the planned strike.
During the period of notice, the parties concerned are obliged to negotiate.