On top of what TripTrap mentioned, I think you have to also pay her HK$100 (for food or transportation I can't remember, but it should be stated in the green contract I think), and also calculate how many days worth of remaining holiday for which you have to pay her as well. Something like that, again, check the green contract, should be there. As for the air-tic, you can just pay her in cash, although some people prefer to buy them a ticket. It's entirely up to you, not her. But I would think paying her in cash is a lot easier. She would probably want you to write a release letter or termination letter (so that she can go out and find another job). Just keep it simple and list out all the payment, then you sign and she signs as ackowledgement. After that, you fax that over to the immigration department, and that's more or less there is to the whole thing.