Injured Worker's Guide To Workers' Compensation
Mass.gov
The Massachusetts Workers’ Compensation system is in place to make sure that workers are protected by insurance if they are injured on the job or contract a work-related illness. Under this system, employers are required by Massachusetts General Laws Ch. 152, §25A to provide workers’ compensation (WC) insurance coverage to all their employees. This insurance pays for any necessary medical treatment related to the injury or illness and also pays compensation for lost wages after the first five calendar days of full or partial disability.
Injured Worker's Guide to Workers' Compensation 
This guide is availabe in
several languages.