The two week notice is a courtesy. How to Use Two Weeks Notice Letter?Massachusetts is an at-will employment state, which means you can either be fired or quit with or without notice. Start with a two weeks notice letter. This will serve as a formal, written documentation of your intent to leave and your transition timeline. The etiquette is to follow the terms of your current signed employment contract. If your contract says 2 weeks, you give 2 weeks. So it's worth spending a little time making this two weeks' notice letter solid and polished. Providing a two-week notice in writing is imperative, as official communications should be documented to serve as potential evidence if required. It's customary to give an employer at least two weeks' notice.