Article D1247-1 of the French Labour Code
A trade union organisation which takes legal action on behalf of an employee, in application of Article L. 1247-1, shall notify the employee by registered letter with acknowledgement of receipt. The letter shall indicate the nature and purpose of the action envisaged by the representative trade union organisation. It also states: 1° That the action is being taken by the trade union organisation, which may itself appeal against the judgement;…