Mass. Gen. Laws ch. 146 § 53A
The commissioner of the division of occupational licensure shall issue rules and regulations, pursuant to chapter 30A, embodying the classifications of hoisting machinery and establishing criteria and procedures for the issuance, denial, renewal, suspension and revocation of licenses of apprentice operators of such machinery. However, a final adjudication that there has been a violation of federal or state occupational safety and health regulations, or any rule or regulation adopted by the division of occupational licensure, shall be cause for the denial, revocation or suspension of any license issued under this section. Criteria for issuance of such licenses shall include, but not be limited to, training and experience requirements appropriate to the categories of machinery for which the license is intended, and registration with the apprenticeship council within the department of labor standards. A holder of such apprentice license may operate hoisting machinery only under the guidance and supervision of a holder of a license to operate for the category of hoisting machinery to be operated by the apprentice.
Mass. Gen. Laws ch. 146, § 53A