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."A resignation letter should be short and to the point. Simply explain why you're leaving and the date of your departure. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation.