Why should I write a resignation letter? Resignation letters are professional courtesies that extend your professionalism, even in the last.A Resignation Letter is typically a formal document given to employers two weeks before an employee resigns from a role. Share this document. The complete guide to writing your resignation letter including expert tips, free copyable samples, and templates. Use one of our resignation letter templates. This sample resignation letter is available for use on UpCounsel. A sample form to document an employee's verbal resignation. 1. Enter your personal information at the top of the letter. A two weeks' notice letter of resignation is a professional courtesy and at times a contractual obligation.