Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).A simple yet powerful tool, these letters can express gratitude, boost morale, and improve job satisfaction. 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. I want to thank you for allowing me to be part of your career journey and appreciating my help and knowledge. Your employees work hard. Use our employee appreciation letter templates to thank your employees for their effort.