How do you write a retirement resignation letter? Use an attractive header with your personal contact info, include the recipient's name, company and address, and include the date.Email is sufficient. Use one of our resignation letter templates. Jana's letter of resignation shows appreciation for the guidance and support she's received during her time in the position. Give your employer at least two weeks' notice. Employees with a long tenure at the company typically give a month's notice or more. If you plan to resign or retire from the university, please submit a resignation letter to your manager. When an employee resigns, the HR Partner must initiate the termination process promptly after the employee submits the resignation.