Heat Illness Prevention in Texas: What Employers Need Before Summer

Key Takeaways

• OSHA’s revised Heat-Related Hazards National Emphasis Program took effect April 10, 2026, and will run for five years, with no numerical inspection quotas but broader authority to inspect any workplace with heat exposure.
• There is still no final federal heat standard. Until one exists, OSHA leans on the General Duty Clause, and 2026 penalties reach up to $16,131 per serious violation and $161,323 per willful or repeat violation.
• Texas does not currently have its own statewide heat safety law. A bill that would have required heat training, paid rest breaks, and acclimatization plans (HB 3982) was introduced in the 2025 legislative session but did not become law, which puts more weight on employers to self-regulate.
• A compliant heat illness prevention for Texas employers program needs water, rest, shade, acclimatization, training, and a written emergency response plan — not just a poster on the breakroom wall.
• Construction, oil and gas, and outdoor logistics employers in Texas face some of the highest heat exposure in the country and should have a written plan in place before the first heat advisory of the season.

Why Texas Heat Is a Different Kind of Risk

Every state deals with summer. Texas deals with something else. Between the Gulf Coast humidity, the West Texas sun, and stretches where triple-digit heat advisories run for weeks at a time, heat illness prevention for Texas employers is not a generic compliance topic — it is a distinctly regional operational risk.

It shows up in the data. The Bureau of Labor Statistics has tracked heat-related workplace deaths rising for years, and Texas consistently accounts for a large share of them. Construction workers in the Houston area, oil and gas crews in the Permian Basin, and roofing or landscaping teams across the state are all working in conditions that OSHA is watching more closely than ever.

Where OSHA Enforcement Stands Right Now

If you have been waiting for a single federal heat standard to tell you exactly what to do, that wait continues. OSHA has been developing a permanent heat injury and illness prevention rule for years, and while the proposed rule has moved through public comment, it remains in the rulemaking process with no confirmed finalization date.

In the meantime, OSHA is not sitting idle. On April 10, 2026, OSHA issued an updated Heat-Related Hazards National Emphasis Program, replacing the version that had been in place since 2022. A few things changed with this update that Texas employers should know:

• No more numerical inspection quotas. The old version required OSHA regions to double their heat-related inspection activity against a five-year baseline. The revised program drops that fixed target in favor of a condition-based approach tied to actual heat priority days.
• A longer target list. Using OSHA and Bureau of Labor Statistics data from 2022 through 2025, the program now names dozens of high-hazard industries, including construction, farming, manufacturing, warehousing, and restaurants. Inspectors are not limited to that list — any workplace with visible heat hazards can trigger an inspection.
• Inspections tied to heat advisories. Compliance officers are directed to expand inspections whenever a heat advisory or warning is in effect, and unprogrammed inspections can also follow complaints, referrals, hospitalizations, or fatalities.
• Five-year runway. This version is set to stay in place for five years unless superseded. This is the enforcement framework Texas employers will be operating under for the foreseeable future.

Because there is still no dedicated heat standard, most citations are issued under the General Duty Clause, which requires employers to keep the workplace free of recognized hazards. That clause has real teeth. In 2026, the maximum penalty for a serious violation is around $16,500, and willful or repeated violations can reach around $161,500. Add a fatality and criminal exposure becomes a possibility.

Texas Has Not Passed Its Own Heat Standard, and That Matters

Some states, like California and Washington, already have binding heat stress standards. Texas is not one of them. During the 2025 legislative session, a bill called the Worker Heat Illness, Injury, and Death Prevention Act (HB 3982) was introduced. It would have required annual heat safety training, paid rest breaks scaled to the heat index, shaded rest areas, acclimatization plans, and a written emergency response procedure — enforced by the Texas Workforce Commission. The bill was referred to committee but did not advance before the session ended.

The absence of a state law does not mean Texas employers are in the clear. It means the General Duty Clause is doing the heavy lifting, and employers who wait for a mandate before acting carry the exposure in the meantime. Some Texas cities have also looked at local heat protection ordinances in the past, and state preemption has limited what cities can require on their own — which is one more reason a written, defensible heat program from the employer’s side matters.

For free, confidential support building a program, the Texas Department of Insurance runs the OSHCON consultation service, which is separate from OSHA enforcement and exists specifically to help employers address hazards before an inspector shows up.

Recognizing Heat-Related Illness Before It Becomes an Emergency

A heat illness prevention program only works if supervisors and workers can actually recognize the warning signs early. Heat-related illness moves along a spectrum, and it can escalate quickly if ignored.

• Heat rash shows up as red, itchy clusters on skin, usually where sweat gets trapped under clothing. Minor on its own, but a sign that heat exposure is building.
• Heat cramps are painful muscle spasms, often in the legs or abdomen, tied to heavy sweating and electrolyte loss during physical labor.
• Heat syncope is a brief fainting spell or dizziness, often when standing up quickly in the heat. It is a clear signal that a worker needs to cool down and rehydrate immediately.
• Heat exhaustion is more serious: heavy sweating, weakness, headache, nausea, and clammy skin. Left unaddressed, it can progress to heat stroke.
• Heat stroke is a medical emergency. Body temperature spikes, sweating often stops, and confusion or loss of consciousness can set in. It requires immediate medical attention and emergency cooling. Every minute matters.

Training employees and supervisors to spot these stages — not just the worst-case scenario — is one of the most cost-effective things an employer can do. It is also one of the first things an OSHA inspector will ask about during a heat-related inspection.

What a Compliant Heat Illness Prevention Program Actually Includes

A single poster about drinking water is not a heat illness prevention plan. A real program — whether you are building it to satisfy the General Duty Clause today or getting ahead of a future heat standard — generally includes the following.

• A written heat illness prevention plan. This should spell out responsibilities, monitoring procedures, and what happens when the heat index crosses certain thresholds. It cannot live only in someone’s head.
• Water, rest, and shade, made accessible. This means more than telling workers to take a break if they feel hot. Hydration stations placed near work areas, and shaded rest structures or climate-controlled areas where workers can actually recover, matter far more than a policy statement.
• An acclimatization schedule. New and returning workers are at the highest risk during their first days on the job — a disproportionate share of heat-related deaths occur during that early exposure period. A gradual acclimatization schedule, typically building workload in stages over five to seven days, is one of the most effective controls available.
• Engineering and administrative controls. Engineering controls include added ventilation, cooling fans, and shade structures. Administrative controls cover scheduling heavy work during cooler parts of the day, building in mandatory rest periods, and using a buddy system so no one is working alone in high-heat conditions.
• PPE selected for heat reduction. Cooling vests, breathable fabrics, and wide-brim hard hat attachments reduce heat load without compromising other required protective equipment. The selection should be deliberate, not an afterthought.
• Employee training, in the languages your workforce actually speaks. Training should cover how to recognize heat-related illness, what to do if a coworker shows symptoms, and how the emergency response plan works. For many Texas employers, that means delivering training in both English and Spanish — not just posting an English-only handout.
• Emergency response procedures. Every site should know in advance what to do if someone shows signs of heat stroke: who calls emergency services, how the worker is cooled while help is on the way, and who documents the incident afterward.
• Heat index monitoring, not just temperature. Humidity changes how the body handles heat. Tracking the heat index — tied to advisories from the National Weather Service — gives a more accurate picture of real risk on any given day than a thermometer alone.

Who Faces the Highest Exposure in Texas

Not every employer carries the same level of heat risk, but a few sectors stand out consistently in enforcement data and injury reports:

• Construction workers, particularly those on roofing, concrete, and paving crews, with limited shade and heavy physical exertion
• Oil and gas operations, especially in the Permian Basin, where crews often work extended shifts outdoors with minimal climate-controlled areas
• Outdoor logistics and warehousing, where loading docks and non-climate-controlled facilities can trap heat even when workers are technically indoors
• Manufacturing environments without adequate climate control, where heat stress builds throughout a shift regardless of direct sunlight

If your business falls into one of these categories, this is not a topic to defer until July. The National Emphasis Program is already active, heat advisories start well before peak summer, and building a defensible program takes real lead time.

Building Your Plan Before the First Heat Advisory Hits

The employers who manage Texas summers well are not the ones scrambling once a heat wave is already underway. They are the ones who treated heat illness prevention as a planning exercise months earlier: writing the program, training supervisors on early warning signs, stocking hydration stations, and building acclimatization into new-hire onboarding.

With no finalized federal heat standard and no Texas-specific law currently on the books, the responsibility sits with employers to build a defensible program on their own terms. A well-documented plan does more than reduce OSHA exposure — it cuts down on injury claims, reduces civil litigation risk after a heat incident, and keeps crews working safely through the hottest months of the year.

How Aggie Safety Helps Texas Employers Get Ahead of Heat Hazards

Aggie Safety works with construction, oil and gas, and industrial employers across Houston and the broader Gulf Coast region to build heat illness prevention programs that hold up — including written plans, site-specific training in English and Spanish, and review against the updated 2026 National Emphasis Program requirements.

If your current program has not been reviewed since before the April 2026 update, now is the right time. Request a free safety consultation or call (713) 613-2830 to talk with a Houston OSHA safety consultant about where your program stands.