A resignation letter must state a teacher's intent to retire on a positive note with an offer to cooperate during the transition process. 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 resignation indicates my intent to retire June. The employee shall fill out the necessary absence forms upon their return. Resignation Form: A form must be given to your immediate supervisor with a copy to the Human Resources Department. Use a retirement resignation letter template to inform your employer that you plan to leave the workforce.