Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Writing a Resignation Letter.A resignation letter provides notice that you will leave a company. Use one of our resignation letter templates. The complete guide to writing your resignation letter including expert tips, free copyable samples, and templates. Can't give two weeks' notice? Here's how to write a short-notice resignation letter with examples and a template included. Two weeks' notice letter template. Here is a template for a resignation letter that you can adapt for your own use: Resignation letter template. Short Notice Resignation Letter.