Mass. Gen. Laws ch. 112 § 133
No person shall engage in the practice of social work unless he is licensed under the provisions of section one hundred and thirty-one.
No person shall hold himself out to be a licensed certified social worker, or a licensed social worker, or a licensed social work associate unless he has met the applicable requirements set forth in section one hundred and thirty-one.
No person shall engage in the independent practice of clinical social work or hold himself out to be a licensed independent clinical social worker unless he is licensed under the applicable provisions of section one hundred and thirty-one.
Violation of this section shall be punishable by a fine of not more than five hundred dollars, or by imprisonment for not more than three months or by both such fine and imprisonment.
Mass. Gen. Laws ch. 112, § 133