In this article, we discuss how to include a reason in your resignation letter and provide some samples to guide your writing. Learn how to write resignation letter.A resignation letter is a business letter, so it follows formatting conventions for business letters. Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Herman Sanchez submitted his resignation in a letter delivered to the district Friday. . ▫ Upon acceptance of the resignation letter, the Superintendent shall approve the resignation and notify the employee in writing. So Villa Muse is in discussions with Bexar County about moving their planned studio-in-a-city to San Antonio.