[teebrz]

To be clear, the specific part you mention is fair...but I don't think anyone would object to that.

The part where it seems somewhat unfair is where the director asked weixiyen to give up pay they were entitled to.

It's fair enough to ask for a favor ("hey, do you mind using up your vacay days before you leave?"), but you should make clear that it is a favor and what it entails - it sounds like that may not have done in this instance.

[mattlutze]

Unless the state has particular laws, every contract I've had as an employee allows me to quit at any time, and be fired at any time, without reason given.

The director was under no obligation, after that notice, to allow him to work those last two weeks and then take the vacation. He was obligated to pay the vacation as it was compensation earned by weixiyen. But weixiyen (again, could be wrong if his/her state has certain laws) had no legal grounds to compel the company to allow him/her to continue working.