Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. 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 short answer is 'no'though two weeks may be necessary if you signed an employment agreement. Employee shall send a written notification to the supervisor at least 2 weeks in advance of resignation. 2. Give appropriate notice. It's best to give your boss two weeks' notice if you are resigning. Customer: I live in Florida and sent my employer a resignation letter offering a two week notice.