You want to give at least a two weeks' notice. In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started.Employment in the US is considered At Will this means you can quit any time you want and you don't have to give a reason or advance notice. Can an employer terminate me without advance notice or without giving a reason or an unfair reason for the termination? Short, polite, to the point. "This note is to inform you that I have chosen to end my employment with XXXXX, effective immediately (today's date)." Atwill employees can quit at any time with no notice. However, it is customary to give two weeks notice (or even more if you hold a high level position). If you're wondering how to write a resignation email without a notice period, then our sample can help. Every resigning employee shall be urged to indicate in the Resignation form the reason for leaving.