Due to unforeseen circumstances, I must resign. 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. Example: I'm writing to inform you of my decision to resign from my position as a park ranger with the National Park Service, effective May 1st. Date. Dear (Manager's name),. I am writing to officially tender my resignation from (Company name) effective (Date). Effective date of resignation. The resignation letter should include the reason for leaving as well as the proposed effective date. File online- Save paper, save time, start your business online. The most recent example of a vice president certifying their own defeat came after the 2000 election.