I have... I've been on disability for this before. It doesn't cover enough to pay my bills and I'm trying to hang on to work a little (working at home when I can) so that my job stays open for me. (last time I wasn't working at all, so I was eliglible for disability, but when I recovered I'd been away so long I could not go back to my job) However as I seem to be sinking further away from my job that might be a good idea.