(1) There shall be displayed and correctly maintained in every industrial premises a notice of periods of work in such form and in such manner as may be prescribed, showing clearly for every day the periods during which the employees may be required to work.
     (2) (a) A copy of the notice referred to in sub-section (1) shall be sent in triplicate to the Inspector having jurisdiction over the industrial premises within two weeks from the date of the grant of a licence for the first time under this Act, in the case of any industrial premises carrying on work at the commencement of this Act, and in the case of any industrial premises beginning work after such commencement, before the day on which the work is begun in the industrial premises.
     (b) Any proposed change in the system of work which will necessitate a change in the notice referred to in sub-section (1) shall be notified to the Inspector in triplicate before the change is made and except with the previous sanction of the Inspector, no such change shall be made until one week has elapsed since the last change.