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.Use a one week notice letter template to inform your current employer that you plan to resign within seven days. Pick the perfect wording and convey the message best suited for your situation. A resignation letter needs to include your contact information, official notice that you're resigning, and when your final day of work will be. Synonyms for RESIGNATION: leaving, abandonment, abdication, departure, endurance, acceptance, acquiescence, compliance, nonresistance, passivity, … Just make sure you put your last day on the letter. If you got laid off, don't do it. Your emailed resignation letter should be sent to your immediate supervisor, with a copy to the Human Resources department at your workplace. Give your employer at least two weeks' notice.