Heatwaves are becoming a regular feature of Canadian summers, putting outdoor workers like farm laborers, construction workers, and landscapers at significant risk of heat-related health issues.

A 2025 World Health Organization report highlights the rising frequency and intensity of extreme heat events linked to climate change, which exacerbate risks for both outdoor and some indoor workers.Existing provincial regulations lack clarity, enforcement, and specific guidelines for heat stress, leaving gaps in protection.Ontario’s current laws only require employers to take 'reasonable' measures, while BC’s policies are poorly implemented.Proposed solutions include trigger temperatures for heat-related rules, mandatory cool-down breaks, and improved access to water.Experts stress the need for updated regulations, employer training, and proactive monitoring of weather conditions.

Provincial leaders are urged to prioritize modernizing heat safety laws to safeguard vulnerable workers, including temporary and migrant laborers, before the next summer.