hang up (one's) hat(redirected from they are hanging up their hat)
hang up (one's) hat
To retire or cease working or performing some task or duty that one has done for a long time. I'm worried that I'm going to get a ton of work dumped on me when my boss decides to hang up her hat.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.