Let us consider equity implications for wage administration, though the implications are applicable to other situations as well. They alter their work. Those exhaust the possibilities. All of this can be summed up in a simple two by two table. Let's work through it.
Research does support the theory.
The effect is especially strong with under paid workers. We were drinking a beer at a meeting in LA, and talking about equity theory. I said how much more do you work in a week than the professors you supervise. He responded at least 15 on average, maybe more. And there's no way I can do this job in 40 hours.