No adult motor transport worker shall be required or allowed to work for more than eight hours in any day and forty-eight hours in any week:
     Provided that where any such motor transport worker is engaged in the running of any motor transport service on such long distance routes, or on such festive and other occasions as may be notified in the prescribed manner by the prescribed authority, the employer may, with the approval of such authority, require or allow such motor transport worker to work for more than eight hours in any day or forty-eight hours in any week but in no case for more than ten hours in a day and fifty-four hours in a week, as the case may be:
     Provided further that in the case of a breakdown or dislocation of a motor transport service or interruption of traffic or act of God, the employer may, subject to such conditions and limitations as may be prescribed, require or allow any such motor transport worker to work for more than eight hours in any day or more than forty-eight hours in any week.