I had to give my last job some paperwork from SS to fill out. I had no choice. SSI needed it. I gave it to the manager I thought would be the most understanding. All the paperwork was asking was could I do the same job as everyone else and did I need any special accomdations. He filled it out. The next time the schedule came out my hours were cut from 5 days down to 2 days permenantly. I asked why and he just smiled and said "I have a budget too."
I mean, I had no choice SS needed the paperwork so I couldn't do anything. But it was a pretty jerky thing for them to do.
I hope your situation is better.