32. Precaution against dust, noxious gas, fumes and other impurities.– Every employer of a building or other construction work shall ensure that:-

(i) such steps as may be necessary for minimizing of emissions of any gas, fume, vapor or dust which may enter the air at any workplace and for ensuring that the exposure of employees to respirable dust, gas, fume or vapor is limited to an extent that is reasonably practicable but in any case, not exceeding the limits that are harmful to the health of employees;

(ii) no employee is required or allowed to enter any workplace or confined space until all practicable measures have been taken to bring the levels of noxious gas, fume, vapour or dust, which may be present, within the permissible limits.