In some Canadian jurisdictions a certified worker member of the JHSC can stop work under the OH&S Act.

Question

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In some Canadian jurisdictions, such as Ontario, a certified worker member of the Joint Health and Safety Committee (JHSC) can exercise the power to stop work under section 43 of the Occupational Health and Safety (OH&S) Act if they believe there is a dangerous condition or activity that may endanger workers' health or safety. This power is only granted to the certified worker members and not to the management side members of the JHSC.

In Some Canadian Jurisdictions a Certified Worker Member of the JHSC