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. In this article, we discuss how to write a retirement letter and we provide an example letter to help you draft your own.Use this resignation letter sample as a model to advise your employer that you are resigning because you are leaving the workforce. In the opening paragraph, make it clear that you are retiring. All of the following forms must be completed and returned to the Retirement Office for your application to be processed. Application Forms (must be completed). In this post, we provide written 10 different retirement letter samples to use, so you're sure to find one that feels right for your situation. Your retirement resignation letter should begin with a header that states the contact information of the sender and addressee as well as the date.