That's exactly how it's done, except in Alsace-Moselle (the German part of France during a few wars) where it's two weeks when the employee wants to leave and t

That's exactly how it's done, except in Alsace-Moselle (the German part of France during a few wars) where it's two weeks when the employee wants to leave and two to four months (depending on job-specific labour laws – convention collective – and seniority) when the employee is fired.