Learn how to write a letter of resignation to quit your job on good terms. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation."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. How to write a resignation letter that's effective immediately? Begin your letter with a statement of intent that is brief and focused. State that you are resigning and the effective date. Use one of our resignation letter templates. Complete the entire form and enter all requested information in the fields provided.