Mass. Gen. Laws ch. 221 § 51 : COURTS, JUDICIAL OFFICERS AND PROCEEDINGS IN CIVIL CASES — COURTS AND JUDICIAL OFFICERS — CLERKS, ATTORNEYS AND OTHER OFFICERS OF JUDICIAL COURTS — Failure to pay client's money; penalty TEXT PDF An attorney at law who unreasonably neglects to pay over money collected by him for and in behalf of a client, when demanded by the client, shall forfeit to such client five times the lawful interest of the money from the time of the demand. Mass. Gen. Laws ch. 221, § 51