Learn how to write a letter of resignation to quit your job on good terms. It typically includes the date of resignation, a brief explanation for leaving, and an expression of gratitude towards the employer for the opportunity given."A resignation letter should be short and to the point. Simply explain why you're leaving and the date of your departure. 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. Note your last working day. 5. Add contact details, company name, and date. Businesses may fire any employee at any time, for any or no reason, as long as they are not violating any employee protection laws.