Summer Workplace Safety: Indoor Workers Get Heat Stress Too!
When people picture heat-related workplace injuries, they usually think of construction crews or landscapers baking in direct sun. But some of the worst heat stress cases happen indoors—in warehouses, factories, commercial kitchens, and laundry facilities where temperatures climb well past what’s safe, and there’s no breeze or shade to offer relief.
Why Indoor Heat Can Be Even More Dangerous
Outdoor workers at least get some natural airflow. Indoor facilities often trap heat instead, especially in spaces packed with machinery, ovens, dryers, or poor ventilation systems. Warehouses with high ceilings and metal roofing can turn into ovens by mid-afternoon. Commercial kitchens routinely push well past 90 degrees near the line.
Without air conditioning, fans, or scheduled cooldown breaks, indoor workers can face heat index levels just as extreme as anyone working outside—without anyone treating it as an emergency.
Employer Obligations Don’t Stop at the Door
OSHA’s General Duty Clause requires employers to protect workers from recognized hazards, and heat doesn’t become less hazardous just because it’s happening inside a building. Employers operating in high-heat indoor environments are expected to:
- Monitor indoor temperatures and humidity levels
- Provide accessible water and scheduled rest breaks
- Adjust workloads or staffing during extreme heat conditions
- Train supervisors to recognize and respond to heat illness symptoms
A Pattern Employers Often Ignore
Indoor heat stress tends to fly under the radar because it doesn’t come with the obvious visual cue of a blazing sun overhead. That makes it easier for employers to dismiss worker complaints as exaggeration or low tolerance rather than a genuine safety hazard. Repeated complaints about facility temperature, missing water access, or a lack of cooling infrastructure can become key evidence if an employer ignored warning signs that led to an injury.
What Makes These Cases Different
Indoor heat stress claims often hinge on proving the employer knew (or should have known) about the conditions. Maintenance records, internal complaints, thermostat logs, and even employee turnover tied to working conditions can all help establish a pattern of neglect rather than a one-time fluke.
Summer Heat Doesn’t Discriminate
Just because there’s a roof overhead doesn’t mean the summer heat is any less dangerous. Employers who ignore indoor heat hazards should be held to the same standard as those who ignore outdoor ones.
If you’ve suffered a heat-related illness working indoors, the Law Offices of Tim Misny can help. When an employer’s negligence puts your health on the line, I’ll Make Them Pay!® Call my office at (877) 614-9524 so I can evaluate your case right away.


