Nah, I think the standards are pretty universal. It isn't surprising they want more hours. It isn't like they love working, they love money (a very universal standard). The reason why it is in direct conflict with the workers is they aren't getting a fair wage. Overtime isn't a sign of happy workers, it is a sign of mismanagement and low wages.
This gave me pause; because I'd never thought of things this way. Unfortunately this doesn't seem to fit with my own experience. I've worked jobs that paid overtime. I worked overtime when I could, not because I felt the wage was unfair, but because I wanted the extra money.