Chubb Extreme Heat Resource Hub

hot day cityscape

Why extreme heat matters

Extreme heat is the leading cause of climate-related deaths worldwide and it’s getting worse.As heat waves grow more frequent and intense across the globe, they put both human health and economic productivity at risk, and threaten the basic infrastructure we depend on, from energy grids to roads. 

Heat has major global economic implications as heat-related productivity losses topped $220 billion globally in 2023 alone.2 Indoor and outdoor workers alike are exposed, and the same heat waves that endanger public health also accelerate the degradation of critical infrastructure.  

The good news is that solutions exist, and many are simple - from planting trees to adjusting workers schedules. What’s required is awareness and coordination across communities, employers, and individuals. 

The Chubb Extreme Heat Hub outlines research, resources, and solutions needed to combat the deadly and costly impacts of extreme temperatures, across industries and geographies.

Worker Safety

Heat-related health impacts aren’t limited to outdoor workers or people with pre-existing conditions — and the toll is significant. Researchers from Harvard and George Washington University found that 28,000 worker injuries in the U.S. can be linked to working on hot days.3

Indoor workers in active roles like pick-and-pack or manufacturing can be just as much at risk as those working outdoors. Risk also extends beyond the job site: employees without air conditioning at home may may report to a job site already vulnerable to temperature exposure, those living in urban centers experience higher temperatures due to the heat island effect, while rural communities may lack close resources for adequate cooling.  

Individuals, communities, and businesses all have a role to play in protecting people from the worst impacts of heat. For employers, that starts with a heat action plan that builds workforce resilience — for indoor and outdoor roles alike. 

Explore practical strategies to safeguard workers

Occupational Heat Stress

The risk of workplace injury increases when the daily heat index is above 85˚F, with a sharp increase above 90˚F - meaning that employees in a variety of occupations are vulnerable to heat-related injuries and illnesses. This document explores the causes of heat stress, how to recognize symptoms, and what measures can be taken to prevent and respond to various heat illnesses.

Occupational Heat Stress Checklist

Is your organization prepared for extreme heat? Use Chubb's Occupational Heat Stress Checklist to evaluate your heat safety program, identify improvement opportunities, and help protect your workforce from heat-related risks.  For additional risk management tools and expert insights Chubb clients can explore the Chubb Risk Consulting Library.

Property and extreme heat

As temperatures rise, the physical materials in our roads, railways, buildings and power lines can break down our buckle, leading to safety incidents and prolonged business interruption.  

Businesses and communities can integrate solutions to protect property from the worst impacts of extreme heat, from innovative cooling paints and roofs to grid hardening and renewable back up energy.  

Extreme Heat and the Built Environment

Explore strategies for building owners, businesses and communities to protect properties from the worst impacts of extreme heat in our To The Point document on Extreme Heat and the Built Environment.

Resource library

Resilience Insights

Partner with us

Chubb Consulting is your partner for sharper decisions, stronger assets, and climate‑ready operations. Explore how we can support your organization in assessing your risk to extreme heat and implementing solutions that protect your people and property. 

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