Summer is the prime season for construction — longer days, fewer weather delays, and a full project calendar. But it also brings one of the most underestimated risks in the trades: extreme heat. Heat-related illness is a leading cause of occupational injury and death in the U.S., and contractors face some of the highest exposure of any industry. Here’s what you need to know to protect your crew — and your business.
The Real Summer Risk: Heat Illness on the Job
According to OSHA, dozens of workers die from heat stroke every year, and thousands more suffer heat exhaustion, heat cramps, and other heat-related conditions. Outdoor workers — including construction crews — are among the most vulnerable.
Heat illness progresses quickly. What starts as fatigue or dizziness can become a medical emergency within hours. And from a business perspective, a heat-related workers’ comp claim isn’t just costly — it can affect your experience modification rate (EMR), which directly impacts your insurance premiums.
OSHA Requirements: What Employers Must Know
OSHA’s General Duty Clause requires employers to provide a workplace free from recognized hazards — and heat is one of them. While OSHA does not have a specific heat illness standard (as of this writing), inspectors cite the General Duty Clause when employers fail to protect workers from heat.
Best practices OSHA looks for include:
- Water: Cool, potable water available nearby — at least one quart per worker per hour
- Rest: Scheduled rest breaks in shaded or air-conditioned areas
- Acclimatization: Gradual exposure for new and returning workers during hot weather
- Training: All workers and supervisors trained to recognize and respond to heat illness
- Buddy system: No worker left alone to monitor themselves during extreme heat
Contractors who can demonstrate these practices in place are better positioned with OSHA — and with their insurance carrier.
Workers’ Comp Coverage in the Summer Heat
If a worker on your job site suffers a heat-related illness, your workers’ compensation policy is your primary financial protection. Workers’ comp covers:
- Medical treatment for heat exhaustion, heat stroke, and related conditions
- Lost wages during recovery
- Permanent disability benefits if there are lasting health effects
The key is making sure your workers’ comp policy accurately reflects your payroll and crew size, especially if you bring on seasonal labor in the summer. Under-reporting payroll is a common compliance issue during audits — and it can leave gaps in coverage.
Subcontractor Liability: A Critical Gap
If you hire subcontractors, be cautious: if a sub suffers a heat-related injury and doesn’t carry their own workers’ comp, the claim could fall to your policy. Always:
- Require current certificates of insurance from every subcontractor
- Verify that their coverage includes workers’ comp
- Keep documentation on file throughout the project
This is one of the most common — and costly — surprises contractors face during claims season. Your agent can help you put a subcontractor management protocol in place.
General Liability: Heat-Related Third-Party Claims
Heat-related risks don’t stop with your employees. If a subcontractor, delivery driver, or visitor is injured due to heat conditions on a job site you control, your general liability policy may be implicated. Maintaining proper safety practices and site conditions is both an ethical responsibility and a risk management necessity.
Summer is busy — don’t let a preventable heat incident slow your business down. Contact Contractors Insurance Agency to review your workers’ comp coverage, subcontractor protocols, and general liability limits before the hottest weeks of the year.