There's no 'must' obey a boss's commands all day. You're free to do whatever you want; you must only follow your boss's commands if you want him to pay you. And if you think he should pay you when he doesn't want to, then you're making the implicit value judgement that he should act how you want him to, not how he wants to, which seems rather arrogant.

If one wants to consume food, resources etc. produced by other people, one has to be willing to offer something back.