In this article, we discuss what a retail resignation letter is, the key parts you should include in the letter and the steps to writing one. Have your end date documented in your resignation letter, so all parties know the last day of employment.Give two weeks' notice. Review these tips about how to write a nursing resignation letter, including the information that needs to be included and sample resignation letters. There is no legal obligation to provide notice of quitting a job or providing any kind of resignation letter. Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Why should I write a resignation letter? Resignation letters are professional courtesies that extend your professionalism, even in the last. Check out this guide to handling a resignation letter from an employee.