California Indoor Heat Illness Prevention Plan — T8CCR §3396 (2024)
The new 2024 indoor heat illness standard — applies whenever indoor temperature reaches 82°F with employees present. Warehouses, manufacturing, restaurant kitchens, laundries, and many other indoor workplaces are covered.
When this template is required
New as of 2024. Applies to indoor places of employment where the temperature equals or exceeds 82°F when employees are present. Broad coverage — applies to warehouses, manufacturing, kitchens, laundries, and many other indoor workplaces.
Why this template
New 2024 mandate — most employers still adapting
T8CCR §3396 went into effect mid-2024. Many indoor workplaces (warehouses, kitchens, manufacturing) haven't yet established compliance plans. Get ahead of Cal/OSHA enforcement.
Indoor-specific scenarios
Indoor heat is different from outdoor: engineering controls (HVAC, fans, ventilation) are more practical; the cool-down area must be provided indoors; temperature measurement is required. The template is built for the indoor context.
82°F two-tier trigger (with high-heat at 87°F)
T8CCR §3396 has triggers at 82°F (baseline) and 87°F (high-heat with radiant heat). The template covers both.
Engineering control assessment
Indoor employers must consider engineering controls (HVAC, fans, evaporative cooling) before administrative controls. The template includes the engineering control assessment worksheet.
What you receive
- Indoor Heat Illness Prevention Plan (Word .docx) — T8CCR §3396
- Temperature measurement and record-keeping procedure
- Engineering and administrative control assessment
- Cool-down area provision (required at 82°F+)
- Water, rest, and acclimatisation procedures (indoor-tailored)
- Heat illness response procedure
- Employee training outline (indoor-specific scenarios)
- Annual review log
- Integration with IIPP cross-reference
How you get it
This document is written and reviewed against the standard it cites, and it is ready now. The download link is emailed as soon as your payment clears.
Revisions included — if something about your operation changes what the document should say, reply to the delivery email and we will amend it.
Who buys this
- Warehouse and distribution centers
- Manufacturing facilities
- Restaurant kitchens, bakeries, food production
- Commercial laundries
- Foundries, glass works, ceramics
- Any indoor workplace where temperature reaches 82°F
Frequently asked
When does the indoor heat illness standard apply?
T8CCR §3396 applies to indoor places of employment where the temperature equals or exceeds 82°F when employees are present. This covers many indoor workplaces — warehouses, manufacturing, kitchens, laundries, even certain office spaces in summer without adequate cooling.
How is the indoor standard different from the outdoor standard?
Three main differences: (1) Trigger temperature — 82°F indoor (T8CCR §3396) vs. 80°F outdoor (T8CCR §3395). (2) Engineering controls priority — indoor employers must consider HVAC, fans, evaporative cooling, and radiant heat controls before administrative measures. (3) Cool-down area — indoor employers must provide a cool-down area (where temperature is below 82°F) for employees to recover; outdoor employers must provide shade.
What's the 87°F threshold?
T8CCR §3396(c)(3) has additional requirements when the indoor temperature exceeds 87°F, OR when the work involves radiant heat exposure. High-heat additional measures include observation procedures, pre-shift meetings, and emergency communication. Similar to the §3395 outdoor 95°F threshold.
Does this apply to office buildings?
If the indoor temperature in an office regularly reaches 82°F, yes — the standard applies. In practice, most office buildings are climate-controlled and stay below 82°F, but during summer heat waves or HVAC failures, the standard becomes relevant. Coverage is determined by actual temperature, not by industry.
Can I combine indoor and outdoor in one plan?
Yes — many employers have both indoor and outdoor work and combine into one heat illness plan that addresses both T8CCR §3395 and §3396. Our California Heat Illness Plan addresses both environments in a single unified compliance document.