(a) Employment in an office of a factory shall not include any duties in workrooms where goods are manufactured or processed.

(b) No minor employed in an office of a factory shall be permitted to engage in manufacturing or in any manufacturing operation or process, or in shipping or preparing for shipment articles or goods manufactured in the factory. Nothing herein shall be construed to prohibit the employment of a minor in light delivery work. Light delivery work means the delivery of articles or goods weighing less than 15 pounds. Examples of light delivery work are deliveries for dental laboratories and deliveries of photographic prints.

(c) No minor employed in a service store shall be permitted to operate or assist in the operation of any dangerous machinery or equipment, or be engaged in any work involving any chemical, or harmful process.

(d) Employment in a service store shall not involve any duties requiring the minor to be in close proximity to any dangerous machinery, equipment, or process.

(e) No minor shall be employed in delivery work in connection with warehousing and storage.

(f) No minor shall be employed as a motor vehicle helper in riding on a motor vehicle for the purpose of assisting in transporting or delivering articles or goods.

(g) A minor shall be supervised by an adult person at all times that he is on the premises where he is employed.

(h) No minor shall be employed in any occupation that endangers his life or limb, or injures his health. (Penal Law, section 483.)

(i) No minor shall be employed without a vacation work permit issued in accordance with the provisions of the Education Law.

(j) No minor shall be employed during the hours while school is in session. No minor shall be employed more than three hours on a school day, nor more than eight hours on a day when school is not in session. No minor shall be employed more than 23 hours a week during the weeks that school is in session, nor more than 40 hours a week during vacation periods. No minor shall be employed before 8 a.m. nor after 6 p.m. on any day, nor more than six days in any one week. Every employer shall conspicuously post a schedule of the daily working hours on a form provided by the Department of Labor.