No and Yes. This is true in all jurisdictions but especially so in Ontario where OHS regulations lack specific standards for managing exposure to heat stress. In other provinces that do have specific exposure limits, a case COULD BE MADE that a stoppage is warranted when that limit is exceeded. But that’s not an official rule. In fact, I believe that Ontario is the only province that allows for OHS-related work stoppages. By the same token, the OHS exposure limit could be a factor (but far from the only factor) in determining whether a heat stress-related work refusal is valid. Good question and I hope that helps. Glenn
