Want to know how to write a retirement letter of resignation? Get the insights you need and free retirement letter template to help guide the way.The resignation letter must identify your last day of employment. Edit, sign, and share retirement resignation letter online. No need to install software, just go to DocHub, and sign up instantly and for free. A resignation implies future activity. Friends, colleagues, and students will want to know what is next for me. Submit the Withdrawal of Resignation form with a copy of your nomination letter to Field Services. Give your employer at least two weeks' notice. Employees with a long tenure at the company typically give a month's notice or more.