Heat Illness Prevention in Warehouses: OSHA’s Proposed Rule and What It Means for You

Summer is upon us, and for operations managers running warehouses, distribution centers, and logistics hubs, that means one thing beyond peak volumes: heat.

Extreme heat is one of the most underestimated hazards on the warehouse floor, and it is about to get a lot more regulatory attention.

OSHA has been working for years to establish the country’s first formal federal heat illness prevention standard. While the proposed federal heat standard remains under review and may continue to evolve, employers are already responsible for addressing environmental hazards that could impact worker safety. Under OSHA’s General Duty Clause, organizations are expected to take reasonable steps to protect employees from recognized risks associated with both hot and cold working environments.

In this article, we focus on heat and explain the current status, what the proposed rule would require, why warehouses face elevated risk, and the steps you can take now to protect your workforce and operations.

The Heat Problem Is Bigger Than Most People Realize

Heat-related illness is the leading cause of weather-related death in the United States. Between 2011 and 2022, there were:

• 479 worker deaths from environmental heat exposure
• 33,890+ heat-related injuries resulting in days away from work
• 50%+ increase in heat illness cases over the past three years

Warehouses often underestimate risk because heat is not always obvious indoors. But enclosed buildings, metal roofs, equipment heat, and limited airflow can create dangerous conditions quickly.

Where OSHA’s Heat Rulemaking Stands

Historically, OSHA has relied on the General Duty Clause to address heat hazards.

In August 2024, OSHA released a Notice of Proposed Rulemaking (NPRM) for a federal heat standard covering both indoor and outdoor work environments. Public engagement has been extensive, with tens of thousands of comments and formal hearings through 2025.

As of 2026:

• The federal heat standard is not finalized
• OSHA extended its National Emphasis Program (NEP) on heat-related hazards through 2031, signaling that heat enforcement remains an active agency priority.
• The General Duty Clause remains fully enforceable

Additionally, several states already enforce heat standards, including California, Washington, Oregon, Minnesota, and Colorado.

What the Proposed Rule Would Require

OSHA’s proposed framework is based on heat index thresholds:

Even without a finalized rule, OSHA continues to ensure heat safety.

Recent enforcement activity includes:

• ~7,000 heat-related inspections (2022–2024)
• 60+ General Duty Clause citations
• $2M+ in penalties issued in 2024 alone

Why Warehouses Face Unique Heat Risk

Warehouse environments combine several risk factors that increase heat exposure, including:

Facility Design

Large metal roofs, limited ventilation, and inconsistent airflow can trap heat throughout the facility.

Equipment Heat

Forklifts, conveyors, chargers, and machinery continuously add heat to the work environment.

Physical Work

Lifting, unloading, picking, and repetitive movement increase internal body temperature and accelerate heat stress.

Workforce Turnover

Seasonal and newly onboarded workers are often more vulnerable because they may not yet be acclimated to hot conditions.

Building a Heat Illness Prevention Program

You don’t need to wait for regulation to act. Here are some of the heat prevention steps you can take now to ensure a safe working environment:

• Conduct heat risk assessments
• Monitor heat index or WBGT conditions
• Improve ventilation and cooling areas
• Adjust work-rest schedules during peak heat
• Implement acclimatization procedures
• Train workers and supervisors
• Establish emergency response procedures
• Maintain written documentation and safety protocols

How Your Staffing Partner Can Support Heat Safety

Whether dealing with extreme heat during summer operations or cold-weather exposure in certain environments, employers are responsible for evaluating and addressing workplace temperature-related hazards. Proactive planning, training, environmental monitoring, and workforce communication all play an important role in reducing risk and supporting safer operations.

At Eclipse Advantage, we help warehouse and distribution operations implement workforce strategies that support both operational performance and worker safety, especially during high-demand summer conditions. Connect with our team to learn how we can support your facility.