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 post, we provide written 10 different retirement letter samples to use, so you're sure to find one that feels right for your situation.In the opening paragraph, make it clear that you are retiring. Your retirement resignation letter should begin with a header that states the contact information of the sender and addressee as well as the date. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Use this resignation letter sample as a model to advise your employer that you are resigning because you are leaving the workforce.