Given that this is the status quo, employees should adopt the same attitude. When working for an ethical employer, I'll work 48h/day if the situation requires it, but for everyone else, I'll bill them for the "quick question over the phone" outside of my agreed upon working hours; and I'll quit when someone else makes a good offer. Once a (spectacularly unethical) employer tried to pull the "think about the others in your team" stunt only to be amazed when I found them better jobs within a week and everyone else quit, too. I cannot say he learned from that experience, but I equally cannot say I regret my decision.