Use this email template to announce performance bonuses to your employees. DIY bonus letters generator to automates the creation and delivery of bonus letters.A performance bonus is a monetary reward given to employees beyond their regular salary, contingent upon achieving certain predetermined goals or benchmarks. These bonus guidelines were written to help FAS managers think through whether a bonus is an appropriate mechanism to use to recognize and reward an employee. The bonus letter should include details such as the bonus amount, the reason for the bonus, and any performance criteria used to determine it. This employee bonus policy template is ready to be tailored to your company's needs and can be a starting point for setting up your employment policies. These Bonus Payments are in addition to your annual bonus payment. Massachusetts Employee Evaluation Template. Utilize our employee evaluation form for an official assessment of your employees' performance. How do you write a bonus letter to an employee?