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Heat Illness Prevention

water keeps you going

California employers are required to take these four steps to prevent heat illness:

  1. Training
    Train all employees and supervisors about heat illness prevention.
  2. Water
    Provide enough fresh water so that each employee can drink at least 1 quart per hour, or four 8 ounce glasses, of water per hour, and encourage them to do so.
  3. Shade
    Provide access to shade and encourage employees to take a cool-down rest in the shade for at least 5 minutes. They should not wait until they feel sick to cool down.
  4. Planning
    Develop and implement written procedures for complying with the Cal/OSHA Heat Illness Prevention Standard.

Heat Illness Prevention Training

Water.Rest.Shade. The work can't get done without them.

No training classes are currently scheduled.

Education, Training Resources and Publications


For Employers:

For Workers:

More CAL/OSHA Resources:

  • 99 Calor campaign page: contains materials available for download including Heat Illness Prevention videos and discussion guides in multiple languages.
    • Videos and guides available in English, Spanish, Punjabi, Hmong and Mixteco

Outreach and Education Campaign

Heat Illness Regulation

Read the Heat Illness Standard from the California Code of Regulations, Title 8:

Additional Heat Illness Links

October 2016