13. Except in the cases mentioned in section 15, no member of the personnel under eighteen years of age shall be employed in any of the industrial establishments mentioned in section 3, for more than nine hours in any one day or for more than fifty hours in any one week.
One hour shall be allowed at twelve hours each day for meals, if the inspector so directs, but such hour shall not be counted as part of the working hours hereinabove mentioned.
Such day of nine hours shall not commence before seven hours or end after eighteen hours.
R. S. 1964, c. 150, s. 15; 1968, c. 46, s. 6; 1975, c. 49, s. 6.