Due to unforeseen circumstances, I must resign. 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, easy to use templates and helpful tips. A simple resignation letter template should include your name, position, company name, date, and a brief statement of your intention to resign. Upon accepting a written or verbal resignation, the Appointing Authority shall promptly notify the Chief Human.