You want to give at least a two weeks' notice. Begin your letter with a statement of intent that is brief and focused.State that you are resigning and the effective date. My goal is to ask for permission to continue working remotely but kindly give my two weeks notice if the answer is no, all in one e-mail. You should talk to your employer and explain why you can only give two weeks' notice. I am writing to inform you that I will be resigning from my position as (Title) at (Company Name). By the way ppl- depending on the state you live in no notice is legally acceptable. However, I've decided that it's time to pursue a new challenge, and am writing to resign from my position, effective October 30th. State your notice period, which should be in line with the terms of your contract. If necessary, review your contract to confirm how much notice is required.