How To Write Retirement Resignation Letter . Top 5 retirement letter to your employer writing takeaways. Here is an example of a resignation letter written to inform your employer about. Retirement Resignation Letter Template Free Samples Letter Template from simpleartifact.com State your name, position, and the date of your last day of work. “resignation letter due to retirement in the uk”. It should include the job title, notice date, and reason for resignation (which is retirement).