Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).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. Thank you for always going above and beyond what's expected of you. Two things: be honest and be specific. Both things help you avoid sounding like you're just sucking up for the sake of getting on the boss's good side. Thank you for your hard work. Make it simple and to the point. Like "Dear XXXX, I want to thank you for your hard work and dedication to the business. In this article, we explain what an appreciation letter is and how to write one with tips, examples and seven easy steps to write your own.