Cal/OSHA Indoor Heat Rule Triggers (8 CCR 3396)
Checks whether California's indoor heat standard (8 CCR 3396) applies to a work area, and whether control measures are required.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Indoor temperature
- 85
- Clothing that restricts heat removal
- Yes
- High radiant heat area
- No
Result: At 85F with heat-restricting clothing, the rule applies and control measures are required.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Indoor temperature (F)
- Heat index (F)
- Clothing that restricts heat removal
- High radiant heat area
- Minutes of exposure in any 60
- Unairconditioned vehicle, or container being loaded
How this is calculated
Cal. Code Regs. tit. 8, section 3396 (Cal/OSHA heat illness prevention in indoor places of employment). Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.