I used to work for a boss who would proudly say shit to my face like "it's my job to get the most out of you for the least amount of money". I used to respond by flat out refusing to do work saying "you're paying me $12/hr, you're getting $12/hr worth of work from me. You want me to work harder? Give me a raise." We were understaffed and they refused to hire enough people to do the work (our work load more than tripled and they refused to hire any additional staff. Another location had more staff and way less work coming in daily). When my boss started regularly panicking that the work was never done at the end of the day and his ass was going to get handed to him by corporate I was like "huh, that sucks for you, I'm done at 5 and don't give a shit. Maybe you should hire a few extra people like we keep asking"