In the body of the letter, state your intended retirement date (your last day) and your thoughts on a transition plan. In this article, we will explain more about the right retirement letter sample and what to include in this letter.This article will guide you through a retirement letter to employer with stepbystep instructions on how to write it yourself. Greetings, I am writing to formally notify you of my resignation from the position of Customer Service Representative with Highmark Account. In the opening paragraph, make it clear that you are retiring. Give your employer at least two weeks' notice. Employees with a long tenure at the company typically give a month's notice or more. Early Retirement: Don't Make these Five Mistakes. For assistance with completing forms and documents, please contact your financial professional or Franklin Templeton. Retirement Services at (800) 527-2020.