Two weeks is a professional courtesy and just the common expectation. It's really up to you how much notice you feel is reasonable to give.How to Use Two Weeks Notice Letter? Start with a two weeks notice letter. This will serve as a formal, written documentation of your intent to leave and your transition timeline. I have given a 2 week notice to my employer in NC. I would like to go ahead and leave rather than continue as things are. Learn how to write a professional two weeks notice letter with our step-by-step guide. Expert tips, mistakes to avoid, and templates. No need to get all mushy or tell them why you are leaving. If you'd left before the two weeks were up, they wouldn't have to pay you.