Below we provide resources on how to write a retirement letter correctly using our downloadable sample, helpful guide, and template. State your desired retirement date (your last day) and your thoughts on a transition plan in the body of the letter.If you are leaving employment, you have several possible options regarding your City of San José retirement benefits. , effective April 30, 2025. Use singlespacing throughout your resignation letter. Align all paragraphs to the left. The complete guide to writing your resignation letter including expert tips, free copyable samples, and templates. Gov or Fax: (408) 392-6732. 6. The next step in a retirement resignation letter template is to add the date. Do I need to include my reason for retirement in the letter?