Where a worker works in a factory for more than nine hours in any day or for more than forty-eight hours in any week, he shall, in respect to overtime work, be entitled to wages at the rate of twice his ordinary rate of wages.
“Ordinary rate of wages” means the basic wages plus such allowances, including the cash equivalent of the advantage accruing through the concessional sale to workers of foodgrains and other articles, as the worker is for the time being entitled to, but does not include a bonus and wages for overtime work.
Where any workers in a factory are paid on a piece-rate basis, the time
rate shall be deemed to be equivalent to the daily average of their full-time
earnings for the days on which they actually worked on the same or identical job
during the month immediately preceding the calendar month during which the
overtime work was done, and such time rates shall be deemed to be the ordinary
rates of wages of those workers.