Employer's Guide to OSHA's Heat Safety Rules

This guide explains your legal duties to protect your workers, how to recognize heat-related emergencies, and the steps to create an effective prevention plan for your workplace. Although no federal rule specifically addresses heat-related hazards, several states have strict rules, and federal standards are evolving. It’s a good idea to speak with a local employment attorney to ensure compliance.

What Are an Employer’s Responsibilities Under the General Duty Clause?

The Occupational Safety and Health Act‘s General Duty Clause requires every employer to provide a workplace “free from recognized hazards that are causing or likely to cause death or serious harm.” The Occupational Safety and Health Administration (OSHA) uses this clause to enforce workplace heat safety.

While OSHA has no single federal regulation for environmental heat exposure, it can cite employers who fail to provide basic protections. OSHA enforces this rule, often relying on scientific guidance from the National Institute for Occupational Safety and Health (NIOSH) and the Centers for Disease Control (CDC).

Understanding Heat-Related Illnesses

Heat stress is a workplace hazard that occurs when extreme heat raises a worker’s core body temperature to dangerous levels. When a person’s core temperature rises, their body tries to shut down to cool itself. This is when heat illnesses begin. Recognizing the early signs can help prevent serious injury or death.

Any outdoor workers in hot environments are in danger of heat stress, but those most at risk include:

• Construction workers
• Agricultural and landscape workers
• Road workers
• New workers

Some indoor workers are also at high risk, such as those working near furnaces, industrial laundries, or in bakeries.

In addition to hot weather or high temperatures in the work environment, be aware of other personal risk factors. Workers with medical conditions like cardiac or respiratory issues or who have a history of heat-related illness are at higher risk.

Types of Heat-Related Emergencies

Recognizing the signs of different heat illnesses is key to providing the right help. Use this chart to identify the symptoms and know what to do.

Recognizing and responding to these signs promptly not only protects your workers but is a core part of an effective heat illness prevention program.

State-Specific Heat Safety Plans

While OSHA sets the federal baseline, many states have their own safety plans. Twenty-two states have adopted OSHA-approved plans that cover all state and private employers. These state plans often mirror federal requirements, but can be much stricter.

Employers must follow their state’s rules. Failing to manage heat hazards can result in citations and fines from both state and federal agencies.

How To Create a Heat Illness Prevention Plan

Federal OSHA guidelines are a starting point for your business’s heat safety plan. An effective plan should be written, shared with all supervisors and employees, and consistently enforced.

When creating your plan, consider environmental conditions such as:

• Air temperature, humidity, air movement, and direct sunlight
• Radiant heat sources like ovens or machinery
• Required heavy clothing or personal protective equipment (PPE)
• An employee’s physical activity level, age, and acclimatization

Your plan should include the following actions:

• Permit workers to drink water at all times (the CDC recommends at least one pint per hour)
• Create a work schedule that allows breaks in cool or shaded areas
• Develop a workplace training program to help workers recognize the signs of heat-related illness.
• Have an emergency response plan for all illnesses and injuries
• Screen employees for heat-related health conditions that may increase their risk
• Devise a heat acclimatization program for new and returning employees
• Allow immediate first aid for any worker showing symptoms of heat illness

When it comes to heat stress, it’s better to prepare than to react. Having a well-conceived plan in place can be a tremendous help.

Get Legal Help With OSHA Regulations

Ensuring your business is compliant with both federal and state heat safety rules is critical. An incorrect or incomplete plan can expose your business to fines and lawsuits. Contact an employment lawyer in your area to get advice tailored to your specific industry and location.