Escalating Occupational Risks from Extreme Weather – A Climate Wake-Up Call

As climate change accelerates, its consequences are becoming increasingly visible in every corner of society. One of the most alarming—and often overlooked—impacts is on the global workforce. The World Meteorological Organization (WMO) released its State of the Global Climate 2024 report in March 2025, warning that extreme weather events are driving a significant rise in occupational health and safety risks. These risks, once considered seasonal or localized, are now global, year-round concerns.

From searing heat waves to hazardous air quality caused by wildfires, the workplace has become a frontline of climate vulnerability. Workers in sectors such as agriculture, construction, and emergency services face heightened exposure to environmental hazards that threaten both their short-term safety and long-term health. The WMO’s findings underscore a growing urgency: without systemic changes in infrastructure, climate adaptation, and labor policy, the human cost of climate change will continue to rise.

The WMO’s State of the Global Climate 2024 offers a stark portrayal of the world’s changing climate and its impacts on human health and labor. The report confirms that 2024 was the hottest year on record, with global average temperatures reaching 1.45°C above pre-industrial levels. The number of extreme heat events significantly increased, particularly across southern Europe, North Africa, the Middle East, and large parts of Asia.

One of the report's most critical findings is the connection between extreme heat and declining labor productivity. In regions like South and Southeast Asia, extreme heat reduced effective working hours in outdoor jobs by as much as 15–20% during the hottest months. The risk of heat-related illnesses such as heatstroke, dehydration, and cardiovascular stress rose dramatically.

Additionally, the WMO highlights how climate-driven wildfires and air pollution are contributing to higher exposure to harmful particulate matter (PM2.5), particularly in North America and Australia. These pollutants increase the risk of respiratory diseases among outdoor workers. Combined with rising sea levels and increased flooding in coastal and delta regions, the report paints a clear picture: the climate crisis is becoming a workplace health crisis.

Certain sectors are disproportionately affected by the intensifying impacts of climate change. According to the WMO and supporting data from the International Labour Organization (ILO), outdoor and manual laborers are among the most at risk. This includes workers in agriculture, construction, transportation, mining, and emergency services.

Agricultural workers, especially in countries with tropical or subtropical climates, face long hours of sun exposure, inadequate access to water, and increased pesticide volatility due to heat. In South Asia, where much of the farming workforce operates without formal protections, rising temperatures are translating into higher rates of illness and death.

Construction workers are similarly vulnerable. Urban heat islands amplify already high temperatures on job sites, while low-income or migrant workers often lack proper equipment or labor rights to push back against unsafe conditions. Emergency responders—including firefighters, disaster relief personnel, and paramedics—are increasingly deployed in dangerous, unpredictable environments made worse by heat, storms, or smoke.

Women, informal workers, and migrants in these sectors face additional challenges, such as limited access to healthcare and legal protections. Without focused interventions, the gap between climate resilience and vulnerability among labor groups will continue to widen.

Real-world events over the past year illustrate the rising toll of extreme weather on workers. In Southern Europe, 2024 saw an unprecedented heatwave that forced outdoor laborers in Spain, Greece, and Italy to halt work for multiple days due to life-threatening conditions. Despite emergency regulations, some workers continued without adequate protections, leading to a spike in heat-related hospitalizations.

In Australia, widespread wildfires during the southern hemisphere summer exposed outdoor workers to extremely hazardous air quality for weeks. Reports of respiratory issues among agricultural and utility workers surged, prompting unions to demand tighter air-quality safety standards.

Meanwhile, Bangladesh experienced severe flooding in coastal regions, disrupting factories and exposing workers in the garment industry to unsafe building conditions. Power outages and inadequate emergency plans created additional health risks for employees forced to work during the storms.

These examples echo the WMO’s core message: occupational risks are no longer occasional side effects of extreme weather—they are now structural challenges that require immediate attention and long-term planning.

Policymakers and labor organizations are beginning to respond to the growing threat of climate-driven occupational hazards. The ILO has been working with national governments to implement climate-adaptive labor protections, including heat stress action plans, early warning systems, and mandatory hydration and rest breaks in high-risk sectors.

In the European Union, several countries—including Spain and France—have adopted new occupational safety standards triggered by temperature thresholds. These rules allow workers to suspend work during extreme heat and ensure access to shade, water, and cooling stations. In India, pilot programs have introduced "heat action plans" in major cities, providing heat alerts, public awareness campaigns, and infrastructure support for outdoor laborers.

Technological solutions are also emerging. In Africa, several governments are using mobile alerts to warn workers of upcoming extreme weather. The private sector is beginning to adopt wearable sensors that track heat stress and environmental exposure in real time.

Despite these advances, implementation remains uneven. The WMO report stresses that efforts must scale quickly—particularly in low- and middle-income countries where climate impacts are most severe and labor protections weakest.

The WMO’s findings make clear that climate adaptation is no longer optional—it is essential to protecting the global workforce. Governments must embed occupational safety into national climate strategies, and employers must take proactive steps to safeguard employees through infrastructure, education, and technology. Global institutions must ensure funding reaches the most vulnerable regions and sectors. Most importantly, labor protections must evolve as fast as the climate is changing. Climate justice and worker safety are deeply intertwined—and addressing one requires addressing the other. The workplace is now a climate front line, and the time to act is now.