Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own.We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company. In this article, we'll provide a detailed resignation letter example to help you leave your current position on good terms. Below is a sample union resignation letter. You should check your union's constitution and bylaws to see if it is specific to whom a resignation must be sent. Simply explain why you're leaving and the date of your departure. I am writing to notify you of my resignation from my position as (job title) at (company name).