Mass. Gen. Laws ch. 152, § 14
(1) Except as provided in subsection three, if any administrative judge or administrative law judge determines that any proceedings have been brought, prosecuted, or defended by an insurer without reasonable grounds:
(b) if a subsequent order requires that additional compensation be paid, a penalty of double back benefits of such amount shall be paid by the insurer to the employee, and such penalty shall not be included in any formula utilized to establish premium rates for workers' compensation insurance.
If any administrative judge or administrative law judge determines that any proceedings have been brought or defended by an employee or counsel without reasonable grounds, the whole cost of the proceedings shall be assessed against the employee or counsel, whomever is responsible.
(3) Notwithstanding any provision of section one hundred and eleven A of chapter two hundred and sixty-six to the contrary, any person who knowingly makes any false or misleading statement, representation or submission or knowingly assists, abets, solicits or conspires in the making of any false or misleading statement, representation or submission, or knowingly conceals or fails to disclose knowledge of the occurrence of any event affecting the payment, coverage or other benefit for the purpose of obtaining or denying any payment, coverage, or other benefit under this chapter; and any person or employer who knowingly misclassifies employees or engages in deceptive employee leasing practices for the purpose of avoiding full payment of insurance premiums; and any law firm, healthcare establishment or agent thereof that employs or contracts persons or firms to personally coerce or encourage individuals to file compensation claims, shall be punished by imprisonment in the state prison for not more than five years or by imprisonment in jail for not less than six months nor more than two and one-half years or by a fine of not less than one thousand nor more than ten thousand dollars, or by both such fine and imprisonment.
The court shall, after conviction, conduct an evidentiary hearing to ascertain the extent of the damages or financial loss suffered as a result of the defendant's crime. A person found guilty of violating this section shall, in all cases, upon conviction, in addition to any other punishment, be ordered to make restitution for any financial loss sustained to an aggrieved person as a result of the commission of the crime. Such restitution shall be ordered in accordance with the provisions contained in section one hundred and eleven B of chapter two hundred and sixty-six and shall be reduced by any amount previously recovered under subsection (2).