In this article, we discuss what to include in a professional resignation letter and we share examples of resignation letters you can use for reference. Resignation letters are professional courtesies that extend your professionalism, even in the last days of current employment.In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. Below, you'll find a suggested outline, examples for different scenarios, and tips on writing a resignation letter that works for you. To file a book request, fill out a for this purpose at the table to the left of the Lending Desk at Ground Hillman. Reference Services. 1. Resignation letters are professional courtesies that extend your professionalism, even in the last days of current employment. They resign in writing and do not withdraw their letter of resignation within seven. (7) calendar days of its submission provided the employee gave notice in.