24. Number of hours of work which shall constitute a normal working day.-The number of hours which shall constitute a normal working day, shall be- (a) in the case of an adult, 9 hours; (b) in the case of a child, 41/2 hours. (2) The working day of an adult worker shall be so arranged that inclusive of the intervals of rest, if any, shall not spread over more than twelve hours on any day. (3) The number of hours of work in the case of an adolescent shall be the same as that of an adult or a child accordingly as he is certified to work as an adult or a child by a competent medical practitioner approved by the Central Government. (4) The provisions of sub-rules (1) to (3) shall in the case of workers in agricultural employment, be subject to such modifications as may, from time to time, be notified by the Central Government. (4A) No child shall be employed or permitted to work for more than 41/2 hours on any day. (5) Nothing in this rule shall be deemed to affect the provisions of the Factories Act, 1948 (63 of 1948). | 