Article L1232-6 of the French Labour Code
When an employer decides to dismiss an employee, it notifies the employee of its decision by registered letter with acknowledgement of receipt. This letter shall include a statement of the reason or reasons given by the employer. It may not be sent less than two working days after the scheduled date of the pre-dismissal interview to which the employee has been summoned. A decree of the Conseil d’Etat shall determine…