No child under fourteen (14) years of age shall be employed, permitted or suffered to work in or in connection with any mine, factory, workshop, mercantile establishment, store, telegraph or telephone office, laundry, restaurant, hotel, apartment house, or in the distribution or transmission of merchandise or messages. It shall be unlawful for any person, firm or corporation to employ any child under fourteen (14) years of age in any business or service whatever during the hours in which the public schools of the district in which the child resides are in session, or before the hour of six o’clock in the morning, or after the hour of nine o’clock in the evening: provided, that any child over the age of twelve (12) years may be employed at any of the occupations mentioned in this chapter during the regular vacations of two (2) weeks or more of the public schools of the district in which such child resides. Provided however, a student may be employed by the public schools of the district for a maximum of ten (10) hours per week provided such employment is voluntary and with the consent of the student’s legal guardian.