Heat Illness

Exposure to conditions of extreme heat and high humidity can subject employees to physical conditions that can range from uncomfortable to life-threatening. This section describes those conditions and the environmental and personal factors that create risk to employees. There are also specific procedures that relate to high-heat conditions.​​​​​​​​​​​​​

  • Heat Illness Overview

    Heat Illness OverviewThe heat illness standards apply to all outdoor places of employment.  More »

  • Providing Water

    Providing WaterYou must provide employees with free, ready access to fresh, pure, cold, potable drinking water.  More »

  • Providing Shade

    Providing ShadeShade must be present when the temperature exceeds 85 degrees Fahrenheit. You must provide and maintain one or more shaded areas at all times while employees are present.  More »

  • Implementing High-Heat Procedures

    Implementing High-Heat ProceduresEmployers must implement high-heat procedures when the temperature equals or exceeds 95 degrees Fahrenheit. These procedures must include the following, to the extent practicable.   More »

  • Training Employees on Heat Illness

    Training Employees on Heat IllnessYou must provide employee training before an employee or supervisor begins outdoor work. You must provide effective training in the following topics to all supervisory and non-supervisory employees:   More »

  • Documenting Heat Illness Prevention Procedures

    Documenting Heat Illness Prevention ProceduresYou must compile and maintain written procedures for the following areas related to heat illness.   More »

  • Recognizing Conditions That Create Heat Illness

    Recognizing Conditions That Create Heat IllnessEmployees' exposure to high air temperature and relative humidity, radiant heat from the sun and other heat sources cause medical conditions that lead to the stages of heat illness.  More »

  • Recognizing Stages of Heat Illness

    Recognizing Stages of Heat IllnessHeat illness occurs when the body's temperature control system cannot maintain an acceptable temperature.  More »