Learn how to write a resignation letter (and what not to include) and then use our example letters as a guide. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own.Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Your letter of resignation should be short and professional. I am writing to inform you of my decision to retire from my position as (Your Job Title) at (Company Name). My last day of work will be (Date).