A performance evaluation is a formal written evaluation of the quality of your work performance. A simple yet powerful tool, these letters can express gratitude, boost morale, and improve job satisfaction.Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word). Your employees work hard. Use our employee appreciation letter templates to thank your employees for their effort. We are committed to ensure that high performance standards are promoted, monitored, and maintained for all. Commending Superior Performance. The City reports on accomplishments and progress toward Consolidated Plan goals in the Consolidated Annual. Thank you all for your hard work and dedication to the animals!