How to write a resignation letter that's effective immediately? In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own.Learn how to write a professional resignation letter with our step-by-step guide and easy to use templates. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Every resigning employee shall be urged to indicate in the Resignation form the reason for leaving.