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. This job aid describes the process for submitting your resignation letter.In this article, we discuss how to write a retirement letter and we provide an example letter to help you draft your own. Org or call 972-925-4300. How do you write a retirement resignation letter? Use one of our resignation letter templates. Your retirement resignation letter should begin with a header that states the contact information of the sender and addressee as well as the date. In the opening paragraph, make it clear that you are retiring. Please complete all fields on the form. In the opening paragraph, make it clear that you are retiring.