You want to give at least a two weeks' notice. It is not mandatory to accept the resignation in writing.Explore more articles. 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. Discover the key components you must know when writing a resignation acceptance letter. I regretfully have to inform you that, after much thought, I have decided to resign and please accept this letter as a formal notice of my resignation. When you write a letter of resignation, you have quit. Offering to stay two weeks is the standard in an effort to help transition the work etc.