The Massachusetts Average Weekly Wage Computation Schedule is a form used to calculate the average weekly wage of workers covered by the Massachusetts Workers' Compensation Law. The form is used to determine the rate of compensation to be paid to an employee who has sustained an injury or illness that resulted in physical or mental incapacity, or death. The form is used to calculate the employee's average weekly wage by taking into account the employee's wages, tips, bonuses, commissions, and other compensation that was earned in the 12 months prior to the injury or illness. There are three types of Massachusetts Average Weekly Wage Computation Schedule: Schedule A, Schedule B, and Schedule C. Schedule A is used for employees who have only one job. Schedule B is for employees who have two or more jobs. Schedule C is for employees who have seasonal employment. Each schedule has different instructions and rules for calculating the average weekly wage.