A resignation letter is an official letter of notice sent by an employee who is leaving the company to the employer. The purpose of writing a resignation letter is to give official notice on the employee's last day with the company, reasons for leaving, and expression of wanting to maintain a positive relationship with the employer.

A good resignation letter should be to the point and professional while providing sufficient information about the transition of the current role. Being able to write a good resignation letter helps leaving a decent impression to your previous employer and an opportunity to stay in contact with your supervisors.