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. I am writing to inform you of my upcoming retirement from the position of Marketing Manager at SunLife.Use this resignation letter sample as a model to advise your employer that you are resigning because you are leaving the workforce. Include the position title and the last day you intend to work. In this article, we discuss how to write a retirement letter and we provide an example letter to help you draft your own. In the opening paragraph, make it clear that you are retiring. 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.