Where the time-weighted average WBGT index, determined over a period of one hour, exceeds 30 in the
environment in which an employee works, the employer of such employee must -
- if practicable, take steps to reduce the said index to below 30; or
- where it is not practicable to reduce the said index to below 30 and where hard manual labour is performed
-
(i) have every such employee beforehand and thereafter, at intervals not exceeding one year, certified fit
to work in such environment by a registered medical practitioner or a registered nurse according to a
protocol prescribed by such practitioner, and every such employee shall, if found fit to work in such
environment, be issued with a certificate to that effect by such practitioner or nurse;
(ii) ensure that every such employee is acclimatised to such working environment before he is required or
permitted to work in such environment;
(iii) inform every such employee of the need to partake of at least 600 millilitres of water every hour;
(iv) train every such employee in the precautions to be taken to avoid heatstroke; and
(v) provide the means whereby every such employee can receive prompt first-aid treatment in the event
of heatstroke:
Provided that, where the question arises as to whether any particular type of work does in fact constitute
hard manual labour, the decision of an inspector shall be decisive.