(a)For all factories wherein 1,000 or more workers are ordinarily employed-(i)Where the number of workers ordinarily employed in a factory is not less than 1,000 and not more than 1,500 - one Safety Officer;(ii)Where the number of workers ordinarily employed in a factory is more than 1,500, but does not exceed 10,000 - one additional Safety Officer for every 1,500 workers in excess of 1,500: