(1)Effective provision shall be made for securing and maintaining a reasonable temperature in each workroom, but no method shall be employed which results in the escape into the air of any workroom of any fume of such a character and to such extent as to be likely to be injurious or offensive to persons employed therein.
(2)In every workroom in which a substantial proportion of the work is done sitting and does not involve serious physical effort a temperature of less than sixty degrees shall not be deemed, after the first hour, to be a reasonable temperature while work is going on, and at least one thermometer shall be provided and maintained in a suitable position in every such workroom.
(3)The Minister may, by regulations for factories or for any class or description of factory or parts thereof, prescribe a standard of reasonable temperature (which may vary the standard prescribed by subsection (2) of this section) and prohibit the use of any methods of maintaining a reasonable temperature which, in his opinion, are likely to be injurious to the persons employed, and direct that thermometers shall be provided and maintained in such places and positions as may be specified.