Abusive employers classify many de facto line workers as overtime-exempt, often illegally, and workers should not be complicit in this. An employer who tried to treat a unionized industry the way programmers are treated would be laughed at.
> Also what's a class traitor? it's not like I'm working so hard not to become filthy rich. All my colleagues are doing the same.
Sure, but remember that you're not actually a "temporarily embarrassed millionaire" - you most likely have much more common interest with your colleagues than with your bosses. When you find yourself in a prisoner's dilemma situation, remember that the correct metastrategy is to cooperate with people like you and with people who will cooperate themselves, not with a group that's well known to select for sociopathy.
Also what's a class traitor? it's not like I'm working so hard not to become filthy rich. All my colleagues are doing the same.