Learn how to craft a heartfelt retirement letter for your Burger King career. Express gratitude and leave a lasting impression.A retirement letter is a letter you can submit to your employer to formally announce your retirement and your intention to resign from your position. In this blog post, we'll review some guidelines for writing a retirement letter and offer tips for getting them out before the deadline. In the body of the letter, state your intended retirement date (your last day) and your thoughts on a transition plan. Context: I'm senior director for midsize software firm. I'm giving notice on Monday, and last day with the firm to be Sept 13. Place your closing phrase two lines below the end of the letter's body. A retirement letter is a type of resignation letter, but the main difference is its purpose. After more than 41 years of paid career fire service in the Federal Way and Des Moines areas, Church announced his retirement from South King on Jan.