Linked below are templates for resignations and retirements. Please be certain that your letter is signed, dated correctly and addressed to your administrator.This article will address how to write a retirement letter of resignation and provide an example that you can use as a template for your own retirement letter. To resign from your position, complete and submit a resignation letter to your supervisor at least two weeks, or as soon as possible, before your last day. Place your closing phrase two lines below the end of the letter's body. Decide on a Delivery Method. The next step in a retirement resignation letter template is to add the date. What's included in a retirement letter of resignation? Decide on a Delivery Method. Your employer should then keep the retirement letter on file with your contract and other employee records.