A resignation letter is a formal and professional document submitted by an employee to inform their employer of their decision to leave the company. This letter typically includes key details such as the employee's intention to resign, the effective date of their resignation, and, if applicable, a brief explanation for the decision. It often expresses gratitude toward the employer for the opportunities and experiences gained while working with the company. Additionally, the letter may offer assistance during the transition period, such as training a replacement or helping with handover tasks. By submitting a resignation letter, employees maintain professionalism and provide the employer with adequate notice to plan for the employee's departure. It is signed by the employee and serves as a courteous, respectful way to formally conclude their employment relationship.