Between ages 15-21 I worked a lot of retail. I had managers who would do the "on time is late" thing, or make me clock out and then wait for 20 minutes for them

Between ages 15-21 I worked a lot of retail. I had managers who would do the "on time is late" thing, or make me clock out and then wait for 20 minutes for them to unlock the door at closing time. I knew those things weren't legal, and I'd make a stink about it. I was an exemplary worker, which I'm sure afforded me some leeway, but more importantly I was young, white, and living at home with my middle-class parents. I didn't need the job. I wanted the job of course (56k modems aren't free!) but I didn't have the fear that I or my family might starve if I talked back. What's the solution? Mandatory severance for every job?