Section 78. Whoever, by himself or for others, or through agents, servants or foremen, employs, induces or permits any minor to work contrary to sections 60 to 74, inclusive, shall be punished by a fine of not less than $500 nor more than $5,000 or by imprisonment for not more than 1 month, or both. The employment of any minor in violation of said sections, after the person employing such minor has been notified thereof in writing by any authorized inspector or supervisor of attendance, shall constitute a separate offence for every day during which the employment continues. Violations of sections 56 to 105, inclusive, shall be reported by the department to the division of industrial accidents.