It is a Tuesday morning in late July. Your facility’s main production floor has no air conditioning, and the thermometer outside hit 94 degrees Fahrenheit by 9 a.m. Two of your workers have already asked to step outside. Then an OSHA compliance officer walks through the front door, not responding to a complaint, working through a scheduled inspection under the agency’s national heat emphasis program. She asks to see your written heat illness prevention plan, your acclimatization procedures, and records of your employee heat safety training. Do you have them?
If that scenario sounds remote, it’s about to feel much more familiar. OSHA’s proposed permanent heat illness prevention standard has stalled in federal rulemaking with no target date for finalization. But while the rule waits, OSHA’s enforcement activity has expanded dramatically, and the facilities getting caught unprepared are learning the hard way that the absence of a final rule does not mean the absence of enforcement.
The Enforcement Surge Nobody Anticipated
When OSHA published its Notice of Proposed Rulemaking for heat illness prevention in August 2024, many EHS professionals assumed enforcement might pause while the rulemaking ran its course. The opposite happened.
OSHA’s original Heat National Emphasis Program expired in April 2026. Two days later, OSHA replaced it with an expanded, revised version effective through April 2031. The result: heat inspections have surged from roughly 200 per year to approximately 2,400 per year, now accounting for about 6 percent of all OSHA inspections conducted nationwide.
~2,400
OSHA heat inspections per year under the expanded National Emphasis Program
Source: Ogletree Deakins, citing OSHA data, up from roughly 200 per year before the NEP expanded
This shift matters because even without a finalized standard, OSHA can cite employers under the General Duty Clause, which requires employers to keep workplaces free from recognized hazards likely to cause serious harm or death. Heat illness qualifies. And inspectors are using the proposed rule’s framework as a practical benchmark for what “adequate” looks like in any given facility.
What Inspectors Are Actually Looking For
OSHA heat inspections under the National Emphasis Program focus on whether facilities have implemented basic preventive measures. Based on the proposed rule and current NEP guidance, inspectors typically evaluate whether facilities have a written heat illness prevention plan specific to the worksite, not a generic safety policy borrowed from another context. They look for documented acclimatization procedures, particularly for new and returning workers, since the first two weeks of heat exposure carry the highest risk for illness. They expect to see evidence that workers have free access to water, shade, and scheduled cool-down rest breaks. They want to see that supervisors and workers have been trained to recognize heat illness symptoms and know what to do when someone shows them. And they will ask about emergency response procedures, including who calls 911 and how to begin cooling a worker before emergency services arrive.
What is often underestimated is the scope of these requirements. They apply equally to indoor workplaces. A warehouse running at 88 degrees with radiant heat from equipment and no forced air movement can trigger the same General Duty Clause exposure as a rooftop crew in August. Facilities that assume heat enforcement applies only to outdoor work are routinely caught unprepared.
Heat Illness Is a System Problem, Not a Personal One
One of the most persistent and damaging misframings in workplace safety is treating heat illness as a failure of individual workers to pace themselves or recognize their limits. The occupational health data consistently tells a different story.
The National Institute for Occupational Safety and Health (NIOSH) frames heat illness as an occupational exposure problem, governed by the same control hierarchy that applies to any physical or chemical hazard: measure the exposure, assess the risk, implement controls, and monitor effectiveness. When a worker develops heat exhaustion or heat stroke, the system created the conditions. The question to ask first is not what the worker should have done differently, but what demands the work environment placed on them, what protective measures were absent, and whether acclimatization time was actually built into the schedule or just nominally listed in a policy nobody reviews.
This systems lens is practically important, not just philosophically. OSHA’s General Duty Clause enforcement has found employers liable specifically because they knew heat was a recognized hazard and did not implement feasible controls. “We told them to drink water” is not a control under that standard. A documented risk assessment, a site-specific prevention plan, and a documented emergency response procedure are.
How to Build a Heat Risk Assessment Your Facility Can Stand Behind
A defensible heat risk assessment does not need to be lengthy, but it must be specific to your actual work conditions. Generic heat safety programs rarely map to the exposure levels workers face in a given role, shift, or area of your facility. Here is a practical framework for building one that holds up under scrutiny:
Building a Site-Specific Heat Risk Assessment
Walk each work area and document all heat sources: ambient temperature, direct sunlight, radiant heat from equipment or materials, humidity levels, and physical activity demands by job role. Note seasonal and shift-level variability.
Use OSHA’s heat index thresholds or NIOSH recommended exposure levels to classify each job role as lower, moderate, high, or very high risk. Document which roles and areas exceed action limits during peak conditions.
Start with engineering controls (air conditioning, ventilation, radiant heat shielding). Layer in administrative controls (adjusted work schedules, rotation, mandatory breaks). Use cooling PPE only as a supplement, never as a primary control.
OSHA’s proposed rule and current guidance both emphasize acclimatization as a critical control. Create role-specific schedules that govern new hires and workers returning after a week or more away from heat-exposed work.
Run a tabletop exercise with supervisors focused on heat stroke response. Confirm every supervisor knows the cooling protocol, who contacts emergency services, and where the cooling supplies are located in each area.
The output of this process should be a written, site-specific heat illness prevention plan that names the specific hazards, the controls assigned to each, and the emergency response protocol. That document is what OSHA will ask to see, and its absence or vagueness is often what converts an inspection into a citation.
How Q-Risk Can Help
Quantum EHS Management System’s Q-Risk module supports the kind of structured, documented risk assessment process that heat illness prevention requires. Using a configurable risk matrix, EHS teams can evaluate heat exposure by job role and work area, score each exposure against defined severity and likelihood criteria, assign corrective controls with responsible owners and target dates, and track mitigation progress through to close-out. The result is a documented assessment record that can withstand regulatory scrutiny, not just a spreadsheet that exists somewhere on a shared drive.
For facilities running periodic compliance walkthroughs during peak heat periods, Q-Inspection allows EHS teams to build heat-specific inspection checklists, schedule recurring audits of high-exposure areas, and capture findings with required corrective actions. Together, Q-Risk and Q-Inspection turn a reactive stance toward heat illness into a documented, proactive program, the kind that demonstrates good faith effort to inspectors and, more importantly, keeps workers from getting hurt in the first place.
