OHS Code

Published Date: July 01, 2009
Bookmark this page

Part 4 Chemical Hazards, Biological Hazards and Harmful Substances

Section 18 Exposure during shifts longer than 8 hours

(1) Subject to subsection (3), if a worker is exposed to a substance listed in Schedule 1, Table 2 during a single work shift that is longer than 8 hours, the employer must ensure that equivalent protection from adverse health effects is achieved by adjusting the 8-hour exposure limit using the following formulas:

(2) Subsection (1) does not apply to a substance for which the number “3” appears in the “Substance Interaction” column of Schedule 1, Table 2.

(3) An employer may adjust the 8-hour exposure limit by another method that uses recognized scientific principles that is approved by a Director of Occupational Hygiene.