Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).This article explores the value of sending gratitude messages and introduces guidance and templates for writing them. An employee appreciation or thank you letter is a formal message from an employer that recognizes the former's contribution to the company they work for. Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. "I want to express our heartfelt appreciation to the Music Performance Trust Fund for your support. We are very grateful for your generous gift… You can find 13 samples of employee appreciation letters below. Additionally, you can use our editable templates for employee appreciation cards.