Learn how to write a resignation letter (and what not to include) and then use our example letters as a guide. A resignation letter should be short and to the point.Simply explain why you're leaving and the date of your departure. Include the position title and the last day you intend to work. Use one of our resignation letter templates. Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Open your letter with a direct and unambiguous statement of your intention to resign. Notice of resignation: State in plain language that the letter's purpose is to inform the employer of your resignation. The date of resignation becomes fixed upon receiving notice, and can only.