I don't understand this expectation that employees work more, and stigma if you go home on time, yet we don't have a corresponding stigma for when the amount of money that reaches my account is "only" what we agreed my salary would be.
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As employees realize they’re getting a bad deal and that they can find a better ratio of pay to hours worked at other companies, they leave.
Individual employees are far more numerous (therefore harder to coordinate) and have way shallower pockets than companies, so the negotiation power is always going to be lopsided.