Section 1A. Except as otherwise provided in this section, no employer in the commonwealth shall employ any of his employees in an occupation, as defined in section two, for a work week longer than forty hours, unless such employee receives compensation for his employment in excess of forty hours at a rate not less than one and one half times the regular rate at which he is employed. Sums paid as commissions, drawing accounts, bonuses, or other incentive pay based on sales or production, shall be excluded in computing the regular rate and the overtime rate of compensation under the provisions of this section. In any work week in which an employee of a retail business is employed on a Sunday or certain holidays at a rate of one and one-half times the regular rate of compensation at which he is employed as provided in chapter 136, the hours so worked on Sunday or certain holidays shall be excluded from the calculation of overtime pay as required by this section, unless a collectively bargained labor agreement provides otherwise. Except as otherwise provided in the second sentence, nothing in this section shall be construed to otherwise limit an employee's right to receive one and one-half times the regular rate of compensation for an employee on Sundays or certain holidays or to limit the voluntary nature of work on Sundays or certain holidays, as provided for in said chapter 136.

This section shall not be applicable to any employee who is employed:—

(1) as a janitor or caretaker of residential property, who when furnished with living quarters is paid a wage of not less than thirty dollars per week.

(2) as a golf caddy, newsboy or child actor or performer.

(3) as a bona fide executive, or administrative or professional person or qualified trainee for such position earning more than eighty dollars per week.

(4) as an outside salesman or outside buyer.

(5) as a learner, apprentice or handicapped person under a special license as provided in section nine.

(6) as a fisherman or as a person employed in the catching or taking of any kind of fish, shellfish or other aquatic forms of animal and vegetable life.

(7) as a switchboard operator in a public telephone exchange.

(8) as a driver or helper on a truck with respect to whom the Interstate Commerce Commission has power to establish qualifications and maximum hours of service pursuant to the provisions of section two hundred and four of the motor carrier act of nineteen hundred and thirty-five, or as employee of an employer subject to the provisions of Part 1 of the Interstate Commerce Act or subject to title II of the Railway Labor Act.

(9) in a business or specified operation of a business which is carried on during a period or accumulated periods not in excess of one hundred and twenty days in any year, and determined by the commissioner to be seasonal in nature.

(10) as a seaman.

(11) by an employer licensed and regulated pursuant to chapter one hundred and fifty-nine A.

(12) in a hotel, motel, motor court or like establishment.

(13) in a gasoline station.

(14) in a restaurant.

(15) as a garageman, which term shall not include a parking lot attendant.

(16) in a hospital, sanitorium, convalescent or nursing home, infirmary, rest home or charitable home for the aged.

(17) in a non-profit school or college.

(18) in a summer camp operated by a non-profit charitable corporation.

(19) as a laborer engaged in agriculture and farming on a farm.

(20) in an amusement park containing a permanent aggregation of amusement devices, games, shows, and other attractions operated during a period or accumulated periods not in excess of one hundred and fifty days in any one year.