To help you draft your resignation letter like the example above, here's a checklist of what to include: What to include in a resignation letter. "A resignation letter should be short and to the point.Simply explain why you're leaving and the date of your departure. It typically includes the date of resignation, a brief explanation for leaving, and an expression of gratitude towards the employer for the opportunity given. Begin your letter with a statement of intent that is brief and focused. State that you are resigning and the effective date. I am writing to formally announce my resignation from my position as a chemistry teacher at Lincoln High School. It is recommended to receive a resignation letter from the employee that outlines their last date with your agency. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude. I am writing to inform you that I will be resigning from my position as (Title) at (Company Name).