A meaningful retirement letter needs to be professional, polite, and friendly in tone. 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.Use a retirement resignation letter template to inform your employer that you plan to leave the workforce. This Staff Policy Manual ("SPM") contains employee policies ("policies") of the Maricopa. In the opening paragraph, make it clear that you are retiring. Fill out the form on this page to get a free editable Google Docs template with sample teacher resignation letters to help you compose your own. Once you are logged in, click "Available Forms" and then click "Resignation and Retirement Form". The president and his staff had long been anticipating a retirement letter from Chief Justice William Rehnquist, 80 and ailing with thyroid cancer. Teacher Resignation Letter.