This document governs the operation, construction, and safety requirements for industrial trucks, lift trucks, jitneys, tractors, and internal combustion engine-driven equipment. It also covers the construction of docks and regulations for longshore and waterfront operations. The document mandates that industrial trucks and tractors be equipped with audible horns or warning devices, guards to protect operators, and back rests or guards for handling small or unstable loads. It also requires the construction of docks and car plates to support their load and be securely positioned.

This section of the Massachusetts General Law governs the use of stop signals in longshore and waterfront operations. Employers are required to provide blue stop signs or blue lights for day and night work respectively, to be displayed before employees start working on or under standing railroad cars. The blue signals must bear the word STOP in white letters on a blue background and be placed in a clear and unobstructed place on the track.

Section 18I. Any person violating any provision of the preceding sections eighteen A, eighteen B, eighteen C, eighteen D, eighteen E, eighteen F, eighteen G and eighteen H shall be punished by a fine of one thousand dollars.

Section 2. The attorney general shall, except as otherwise specifically provided, enforce the provisions of this chapter, and shall have all necessary powers therefor.

Section 24A. Whoever dismisses from private sector employment any person over the age of forty, or refuses to employ such person because of his age, except as permitted by subsection 17 of section 4 of chapter one hundred and fifty-one B, shall be punished by a fine of not more than five hundred dollars.

Section 24B. Any provision in any contract, agreement or understanding entered into on or after September first, nineteen hundred and eighty-four, which shall prevent the private sector employment of any person over the age of forty because of his age, except as permitted by subsection 17 of section 4 of chapter one hundred and fifty-one B, shall be null and void.

Section 24C. The department shall investigate all complaints of discrimination, and for that purpose the commissioner or his authorized representative shall have full power and authority (1) to investigate and ascertain the age of each person employed within the commonwealth and (2) to enter any place of business or employment, other than places of employment of persons engaged in domestic service in the home of the employer, within the commonwealth for the purpose of examination and making a transcript of records in any way appertaining to or having a bearing upon the question of the age of any person so employed.

Section 24D. Every person shall keep true and accurate records of the ages of all persons employed by him, as far as practicable to do so, and shall upon demand furnish to the commissioner or his authorized representative a true copy of any such record, verified upon oath. Such records shall be open to investigation by the commissioner or his authorized representative at any reasonable time. Whoever violates any provision of this section shall be punished by a fine of not less than twenty-five nor more than one hundred dollars, and each day of failure to keep such records or to furnish such copies thereof, upon demand, to the commissioner or his authorized representative shall constitute a separate offence.

Section 24E. Whoever hinders or delays an inspector of the department, or a duly authorized representative of the commissioner, in the performance of his duties in the investigation of a complaint under any provision of sections twenty-four A to twenty-four J, inclusive, or who refuses to admit any such inspector or representative to any place necessary for him to enter in the performance of such duty, or whoever refuses to give such inspector or representative such information that he may require for the proper enforcement of any provision of said sections, shall be punished by a fine of not less than twenty-five nor more than two hundred dollars.

Section 24F. Whoever, personally or by his agent, shall discharge an employee for the reason that such employee has furnished evidence in connection with a complaint under any provision of said sections twenty-four A to twenty-four J, inclusive, or that such employee has testified in a judicial proceeding under any such provision, shall be punished by a fine of not less than fifty nor more than two hundred dollars.