Write clearly and concisely. Have someone review your letter before submitting.Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word). I want to congratulate you personally for completing your year with < company name >. It has been a pleasure working with you. You are welcome to use thank you cards, branded stationery, lined paper, or plain white printing paper for your letters. Carefully craft your message in a few sentences. Clearly state your appreciation and what specifically you're thankful for. To the supervisor of Vero Beach lifeguards, I am writing to tell you how appreciative I am to have qualified, courteous and special men on our lifeguard stands.