I told my supervisor at work. i work on a mental health team so my supervisor is a psychiatrist, and we practice from a recovery based model, so it would be pretty hypocritical for me to lose my job over it. I told him because i thought he had figured it out. Turns out he had no idea, but he was cool about it and has not brought it up since. This way if i need time off in the future i also won't have to explain. Telling was generally positive for me, but probably not necessary. It would depend on what your work place is like and how much they know about mental illness. There is a lot of stigma, so telling might cause problems for you. I'm lucky that where i work it's safe enough to talk about.