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OSHA's Updated Heat Safety Program: What Small Business Owners Need to Know
May 19, 2026 9:00:00 AM
OSHA has renewed and strengthened its National Emphasis Program (NEP) for Outdoor and Indoor Heat-Related Hazards, effective April 10, 2026. This directive is in effect for the next five years and significantly expands OSHA's focus on heat safety inspections, arriving just as summer approaches. If your business has employees working in warm conditions, whether outdoors or inside a facility without consistent air conditioning, this program likely applies to you.
Why This Matters for Your Business
This is not a new rule on the horizon. It is an active enforcement program with teeth. OSHA compliance officers are already authorized to conduct inspections, and the agency has a strong track record under this program:
- Between 2022 and 2024, OSHA conducted approximately 7,000 heat-related inspections, up from roughly 200 per year before the program launched.
- Inspectors can cite employers under the General Duty Clause of the OSH Act, which requires employers to protect workers from recognized hazards, even without a formal heat-specific standard in place.
- Violations can result in citations, fines, and hazard alert letters that become part of your enforcement record.
The bottom line: heat safety is no longer a "nice to have." OSHA is actively looking for it.
Who Is Targeted?
OSHA revised its list of 55 high-risk industries based on data from 2021 to 2024. Industries with high rates of heat-related illness, injury, or fatalities were prioritized. Common small business sectors on the list include:
- Construction (roofing, masonry, general contracting)
- Landscaping and groundskeeping
- Agriculture
- Restaurants and food service
- Retail (especially warehousing and stocking)
- Manufacturing and bakeries
Important: Even if your industry is not on the targeted list, OSHA can still inspect your workplace if a heat hazard is visible, or if a complaint, referral, or injury report is filed. All employers with heat exposure, indoors or outdoors, are subject to inspection.
When Can OSHA Show Up?
Inspections are triggered automatically under this program on:
- Any day the heat index is expected to reach 80°F or higher
- Any day the National Weather Service issues a heat warning or advisory for your area
For businesses in warmer climates, this means OSHA inspection activity could be elevated for a significant portion of the year.
What Will Inspectors Look For?
OSHA has added a new structured evaluation framework (Appendix I of the directive) that inspectors will use to assess your heat illness prevention program. Think of it as a checklist. Inspectors will evaluate whether you have:
- Access to cool, potable drinking water readily available to all employees
- Rest breaks and shade (or cool rest areas for indoor workers)
- An acclimatization plan for new or returning employees, especially in the first 7 to 14 days on the job
- A system for monitoring heat conditions and work exertion levels
- Training for both employees and supervisors on recognizing and responding to heat illness symptoms
- An emergency response plan if a worker shows signs of heat stroke or heat exhaustion
What Should You Do Now?
If you're in a targeted industry or simply employ people in warm environments, now is the time to act before summer arrives:
- Review your current heat safety practices against the Appendix I checklist described above.
- Document everything. Written plans, training records, and water/rest logs demonstrate good-faith compliance.
- Train your supervisors to recognize early symptoms of heat exhaustion and heat stroke.
- Establish a buddy system or check-in process on high-heat days.
- Post heat safety information in visible areas of your workplace.
If your industry is newly added to the targeted list, OSHA will conduct a mandatory 90-day outreach period before initiating programmed inspections. Use that window to get your program in order.
The Bigger Picture
OSHA is also in the process of developing a permanent federal Heat Illness and Injury Prevention Standard, though a final rule is not expected in the near future. In the meantime, this NEP serves as the primary enforcement mechanism, and it is active now.
Heat-related illness is preventable. With the right preparation, small businesses can protect their employees, avoid costly citations, and create a safer workplace for everyone this summer and beyond.
For more information: Read the full OSHA directive at https://www.osha.gov/enforcement/directives/cpl-03-00-024-0
