Learn how to write a response to a resignation letter and use our examples and template to help you write your own. It is not mandatory to accept the resignation in writing.You want to give at least a two weeks' notice. If you were fired, don't sign a resignation letter. An at will employee may be terminated at any time and without cause. An exempt monthly-paid staff member is expected to give at least four (4) weeks notice. Notice should be in writing. 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. Assuming there is no contract or agreement to the contrary, you're not required to keep an employee on during their resignation notice period. Assuming there is no contract or agreement to the contrary, you're not required to keep an employee on during their resignation notice period.