My previous job was notorious for underscheduling, and then asking us to stay late, sometimes 10+ hours to help finish the truck. This was an overnight job that started at 11:3opm, and management was super focused on getting all boxes, vehicles and trash off the salesfloor before customers piled in the door at 7am. Perfectly reasonable if we'd had an actual crew but when the truck is 1400 cases and you only have 3 people scheduled, one of whom is 200 years old with a medical excuse to do jack shit, then there will be plenty of untouched cases still staged on the floor when 7am rolls around, natch. I fell for it a couple times and worked 11 hours in one night, and then on the night when I would've gone into OT, boss man texted me and told me to take the night off. The next time it happened I ignored the text, showed up and clocked in anyway**, and oh lordy was he furious. I somehow avoided being written up for that (maybe because we got 75% done instead of 50%) but he did retaliate by cutting my hours back to 24 down from 40. And that was when I decided to fill out some job apps, got a seasonal job offer from Target some months later and the rest is hi$tory
**The time clock at that place allowed you to clock in any time even if you weren't on the schedule. I'm a yuge fan of that feature.