I work as a banker in a branch. In November my drawer was short close to $1000 and my manager said he has to call HR and 3 days later he had me sign performance improvement plan for failing to scan some documents probably which was true but didn't say anything about me giving out $1000 extra on the teller line and those improper scanning happened long time ago, but no one said anything to me until that day. He knew that I was scheduled for a medical leave in 2 weeks, so I left, came back and today (in February) he asked me to sign a final performance improvement plan for being short on the teller line. I said it doesn't look right and I need to think before signing it. Because it seems very odd that he waited 3 months to give me another warning, he could've done all of them in November when my drawer was short. Our company policy for firing is that they first put you on one performance plan, then final performance plan and then termination. So I feel like I'm being set up. He said I have to sign the paper by tomorrow. What should I do? Also before this incident I filled for worker's comp because of carpel tunnel syndrome which I never did follow through, because I had to go on medical leave for another health issues. So should I sign the paper and if they fire me can I file for unemployment?