Why Workers Need Better Protections From Heat Stress

Workers need better protections from heat stress as global temperatures continue to rise, making extreme heat one of the most dangerous occupational hazards of our time. Heat stress occurs when the body cannot cool itself effectively, leading to reduced productivity, illness, and even death in severe cases. With record-breaking heat becoming the norm, ensuring workplace safety in hot environments is no longer optional—it’s essential for protecting both workers’ health and economic stability.

The Growing Impact Of Heat Stress On Workers

According to international labor and health organizations, over 2.4 billion workers worldwide—more than 70 percent of the global workforce—are exposed to heat stress on the job. Excessive workplace heat contributes to millions of injuries and nearly 20,000 deaths every year. Research also shows that productivity drops by 2–3 percent for every degree above 20°C in humid environments, creating significant financial losses for employers. As climate change intensifies, industries from construction to agriculture face increasing risks without stronger protections.

Health Risks And Vulnerable Groups

The effects of heat stress on workers range from mild fatigue and dehydration to life-threatening conditions such as heatstroke and organ failure. A healthy worker’s body temperature should not rise above 38°C for extended periods, but this becomes difficult when performing physical tasks or wearing protective gear in high-heat settings. Vulnerable groups—including outdoor laborers, factory workers, older employees, and those with pre-existing health conditions—face the highest risks. Without adequate safeguards, these workers are more likely to suffer long-term health consequences.

Protecting Workers In A Warming World

Employers, policymakers, and communities must take proactive steps to address the rising threat of heat stress. This includes implementing workplace safety standards such as access to shade, hydration breaks, protective clothing, and regulated shift hours during extreme temperatures. Governments can strengthen labor laws to ensure compliance, while businesses must invest in climate adaptation strategies to keep operations sustainable. Protecting workers from heat stress is not only a matter of safety but also a strategy for building resilience in the face of climate change.