How often these injuries happen
OSHA recorded 2,576 severe cases of heat-related illness over the last decade. When your body's cooling mechanisms fail, the impact is systemic and can lead to rapid physical collapse.
These injuries often result in significant recovery times and potential long-term sensitivity to high temperatures. Chronic dehydration and heat stress can limit your future earning capacity and physical ability to perform strenuous job duties.
Heat stress at work? Check what benefits you may be owed.
Check My BenefitsWhat causes Heat-related Injuries
Environmental heat exposure is the primary driver of these injuries, accounting for 100% of reported severe cases. You face these risks when performing manual labor in poorly ventilated spaces, during outdoor shifts without adequate cooling breaks, or while operating heavy machinery in extreme temperatures.
| Cause | Incidents | |
|---|---|---|
| 1 | Exposure to environmental heat | 2,566 |
| 2 | Incidents onboard water vehicle in normal operation | 5 |
| 3 | Forest fire or wildfire | 2 |
| 4 | Nonroadway collision with other vehicle(s) | 1 |
| 5 | Other fall to lower level | 1 |
| 6 | Bitten or stung by animal | 1 |
Where injuries happen most
Construction leads with 23% of all severe heat-related cases, followed by transportation and warehousing at 20% and manufacturing at 18%. These industries require sustained physical exertion in environments where temperature control is often difficult, leaving you vulnerable to rapid onset heat exhaustion and severe dehydration.
Real cases like yours
Common patterns in these reports show you collapsing while performing routine tasks in attics, on construction sites, or during outdoor delivery routes. These incidents frequently involve sudden cramping, weakness, or light-headedness after prolonged exposure to high temperatures. If any of these scenarios sound like what happened to you, an attorney can help you review the specifics of your incident to determine if your employer failed to provide necessary safety protections.
| Year | State | Industry | Incident summary | |
|---|---|---|---|---|
| 2025 | MA | Construction | "An employee had been working in a customer's attic and was later hospitalized due to dehydration." | |
| 2025 | MA | Construction | "An employee was working in an attic and sustained heat exhaustion and dehydration." | |
| 2025 | FL | Construction | "An employee was installing a generator on a construction site when they began cramping and could not move. The employee sustained heat stress." | |
| 2025 | NJ | Transportation & Warehousing | "An employee was delivering mail when they sustained heat exhaustion." | |
| 2025 | FL | Other Services | "An employee completed an auto glass replacement job outside and experienced light-headedness and weakness in their body. The employee sustained heat exhaustion." | |
| 2025 | FL | Administrative Services | "An employee was walking down a sidewalk operating a stick edger and completing maintenance near the clubhouse. The employee lost consciousness due to heat exhaustion and struck his head and chest. The employee was hospitalized." | |
| 2025 | PA | Transportation & Warehousing | "A driver returned from their route and started experiencing heat stress symptoms. The employee sustained heat exhaustion." | |
| 2025 | PA | Transportation & Warehousing | "A delivery driver was returning to his vehicle when he started having leg cramps. The employee was hospitalized for dehydration." | |
| 2025 | OK | Transportation & Warehousing | "An employee was making deliveries when he started to feel ill. He returned to the office but started feeling worse. The employee was hospitalized with heat stroke and a kidney injury." | |
| 2025 | MS | Construction | "An employee was hanging steel in hot weather. The employee felt sick and was hospitalized with dehydration." |
Source: OSHA Severe Injury Reports. Narratives are verbatim from filings; identifying details may have been redacted by OSHA.