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Heat-related illnesses are preventable; here’s how

By PHIYEN NGUYEN & KRISTINA CARVALHO

As we enjoy the crisp air of fall, a harsh reality remains: our planet is heating up. With more frequent and intense heat waves, 57.5 million Americans are living in areas with dangerously hot summer conditions, yet many states remain unprepared for the heat crisis already unfolding.

Impact of Heat on Health

Extreme heat poses a growing health threat, causing more deaths in recent years in the United States than any other weather-related event. Heat-related illnesses (HRIs), such as heat exhaustion and heat stroke, are on the rise, particularly among the elderly, children, outdoor workers, and individuals with certain preexisting medical conditions.

Not all communities are affected equally. Low-income neighborhoods and communities of color, often situated in urban “heat islands,” face greater exposure and have less access to cooling resources.  Moreover, extreme heat worsens air pollution and spreads disease-carrying insects, exacerbating health risks.

Without stronger protections, HRIs will continue to escalate, especially among populations who are already at increased health risks. Heat standards are a key part of the solution.

What are Heat Standards?

Heat standards are regulations that protect workers from excessive heat by requiring breaks, water access, and emergency procedures to prevent HRIs. Yet few states have heat standards in place.

In 2005, California was the first state to implement a mandatory HRI prevention standard requiring water, shade structures, and rest breaks for outdoor workplaces when temperatures exceed 80°F. Employers are also required to educate their workers about HRIs and have additional precautions in place when the temperatures exceed 95°F. A few months ago, California even expanded protections to include indoor workplaces when it is over 82°F inside.

Washington, Colorado, and Oregon followed suit with similar policies, though without indoor regulations. On the other hand, Minnesota’s heat standard only applies to indoor workspaces. But it’s unique in that it also applies to care facilities such as nursing homes and daycares, protecting the elderly and young children. Lastly, Maryland just passed a heat standard that applies to all outdoor and indoor workers across all industries.


All other states, including warm ones like Arizona, have no established heat standards. Texas and Florida have even tried to prevent their cities and towns from mandating that employers provide heat protections like water breaks.

Heat Standards Work!

Although formal studies are limited, there’s enough observational data to suggest that heat standards are effective at keeping people safe and healthy.

For example, California saw a 30% decrease in reported HRIs following implementation of its heat standard in 2005. Similarly, HRI-related medical visits in Oregon dropped by 75% in the year after the state enacted its standard. What’s more, that was in spite of having more days with temperatures above 80°F as well.

In short, HRIs are preventable. And they’re also cost-effective.

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