Frédéric Desnard has sued (relax, this was in France) because he had so little to do at work that he suffered from "bore out" and this led to a serious depression. [The Guardian article] He's suing his employer for €360,000 ($413,000), saying that for four years he was mis au placard.
"mis au placard" is a French expression which translates as "put on the shelf." In the French workplace the expression means you've been given menial tasks, or little work, or no work.
Interesting that the suit claims damages for missing holidays. Apparently the work was so boring that he needed to rest up from it.
I sympathize with Monsieur Desnard. I once had a job that required little work. There is no way I could have stayed there for four years.