Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).This is one of the most important memos or letters you will write because it builds good will, respect, and cooperation. In this article, we offer some tips and examples to help you write a great thankyou letter to your manager. The message of appreciation should stand alone. Be brief, warm, and sincere. Here's a small samples of a appreciation letter done right. A formal appreciation letter or an email to your employees expresses your gratitude for their contribution to your business. You can find 13 samples of employee appreciation letters below. Additionally, you can use our editable templates for employee appreciation cards.