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OSHA Temperature Working Conditions: Guidelines for a Safe and Comfortable Workplace

Understanding OSHA Regulations and Measures to Protect Workers from Extreme Temperatures

Key Takeaways:

  • OSHA does not require specific temperatures in the workplace but recommends maintaining a thermostat between 68 and 78 degrees Fahrenheit for employee comfort.
  • OSHA regulations come into effect when extreme temperatures pose risks of heat stress, hypothermia, or other dangerous conditions.
  • OSHA utilizes heat stress monitors to measure temperature, humidity, air circulation, and heat sources to determine if conditions are extreme.
  • Heat stress disorders include heat stroke, heat exhaustion, heat cramps, heat collapse or fainting, heat rash, and heat fatigue.
  • Cold stress disorders result from prolonged exposure to freezing temperatures and include trench foot, frostbite, and hypothermia.
  • Employers can protect workers from extreme temperatures by providing ventilation, cool rest areas, appropriate clothing, hydration, and scheduling shifts to avoid the hottest hours of the day.


Maintaining appropriate working conditions is crucial for ensuring the health, safety, and productivity of employees. While the Occupational Safety and Health Administration (OSHA) does not mandate specific temperature requirements in the workplace, it recognizes the importance of providing a comfortable environment. OSHA regulations primarily focus on extreme temperatures that could lead to heat stress, hypothermia, and other adverse conditions. In this article, we will delve into OSHA’s guidelines for temperature working conditions, the impact of extreme temperatures on workers, and the measures employers can take to protect their employees from potential health hazards.

Understanding Extreme Temperature Measurements

OSHA employs heat stress monitors to evaluate temperature and humidity levels, air circulation, and the amount of heat emitted from various sources in a work environment. These factors contribute to a worker’s ability to maintain a safe body temperature. When the body temperature reaches 100 degrees Fahrenheit or higher, it indicates potential trouble and may hinder an employee’s ability to perform their job effectively. OSHA interventions, such as requiring the installation of fans in a bakery with excessive heat radiating from ovens, aim to mitigate these risks.

Heat Stress Disorders and Their Effects

Heat stress disorders encompass a range of conditions resulting from excessive heat exposure. These disorders include:

  1. Heat Stroke: A potentially life-threatening condition where the body’s temperature-regulating system fails, leading to organ damage or failure.
  2. Heat Exhaustion: Symptoms include headaches, nausea, dizziness, and excessive sweating, often caused by dehydration and electrolyte imbalances.
  3. Heat Cramps: Muscle spasms and pain caused by the loss of salt through perspiration.
  4. Heat Collapse or Fainting: Occurs when the brain’s oxygen supply is compromised, leading to loss of consciousness.
  5. Heat Rash: Skin irritation caused by perspiration that does not evaporate, resulting in blocked sweat glands.
  6. Heat Fatigue: Fatigue, reduced mental alertness, and impaired motor skills due to prolonged exposure to high temperatures.

The Impact of Cold Stress

While heat stress is a significant concern, cold stress can also pose serious health risks. Prolonged exposure to freezing temperatures can lead to various disorders, including:

  1. Trench Foot: Caused by prolonged immersion in cold water or exposure to dampness, resulting in tissue damage and infection.
  2. Frostbite: Freezing of the skin and underlying tissues, leading to numbness, discoloration, and tissue death.
  3. Hypothermia: A life-threatening condition where the body loses heat faster than it can produce, resulting in a dangerously low body temperature.

Protecting Workers from Extreme Temperatures

OSHA provides recommendations for employers to safeguard workers from extreme temperature conditions. Some key measures include:

  1. Heat Protection:
    • Ensure well-ventilated work areas with fans or air conditioners.
    • Relocate employees to cooler work spots if feasible.
    • Provide designated cool rest areas for breaks.
    • Relax dress codes to allow lightweight, loose-fitting clothing.
    • Encourage workers to stay hydrated by providing ample water and beverages.
  2. Cold Protection:
    • Advise workers to wear warm, layered clothing that shields against cold, wet, and windy conditions.
    • Schedule frequent breaks in warm, dry locations.
    • Encourage workers to prevent exhaustion and fatigue, which can exacerbate cold stress.
    • Promote the consumption of warm beverages and high-calorie foods to maintain body warmth.


Maintaining appropriate temperature working conditions is essential for protecting workers’ health and well-being. While OSHA does not specify specific temperature requirements, it emphasizes the importance of providing a comfortable and safe environment for employees. Extreme temperatures can lead to heat stress, hypothermia, and other hazardous conditions, which employers must address. By implementing OSHA’s guidelines and taking proactive measures to mitigate risks, employers can create a safer workplace that promotes productivity, employee satisfaction, and overall well-being.

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