The best way to do this is with the help of a lawyer for workers` compensation in Massachusetts. If you are in this situation, John J. Sheehan can help. Learn more about our practice and contact us today for a case assessment! Workers` comp claims are never easy. If you`re injured on the job, all you want is to receive your bills to get back on your feet and take back control of your life. Unfortunately, a number of agencies, your employer and your insurer will too often struggle with your claims. In Massachusetts, if you file a claim for compensation, you are entitled to a set period of time during which your violation is not challenged, and that`s where that term “without prejudice” comes into play.