I know of a "cupboard" case, though. This happened when a company was bought out by another, and wanted to put their people in all the key positions. They morally harassed one executive, depriving him of meaningful work, taking away his office, etc. He wasn't ready to go without compensation, and stuck it out. In the end they had to agree to his financial conditions to obtain his departure.
Oh, but that wasn't in France, (where employers always lose out, right?) The guy was my brother, and that happened in England.