Sorry, I meant I don't have $20k on hand to pay back in 30 days. I don't think I will be able to come up with $20k in 30 days.

Unfortunately it wasn't anywhere in writing. My manager verbally said I would only need to work maybe 1 or 2 overnight shifts a year, but I have worked numerous, then expected to come in for evening shift. This has resulted in migraines and vomiting, which I wasn't even allowed to leave for. I knew it would be every other weekend, but didn't know how awful the scheduling would be.

Its not really illegal, just inconsiderate.

I did. It says I need to pay back $20k minus applicable taxes. I took that to mean, I pay back only what I received.

I have to pay back the entirety of the bonus I received if I leave within 2 years in 30 days.

Just working until midnight, expected to come in at 6am the next day. Long 6-9 day stretches with one day off in between. Every other weeken, while those in elite positions can just leave when they want, and never work a single weekend. My job requires a doctorate degree and I had better hours working at McDonalds. Not illegal, but definitely not conducive to a decent quality of life.

There was no breach in contract that I'm aware of.

I'm just fucked. I will probably have to take out a personal loan.

I never had the money to spend. I only received $13k. I do have that. I don't have $20k though.