Quick Take
- California’s indoor heat rule can apply to restaurant kitchens once indoor temperatures reach 82°F.
- That threshold is lower than many operators expect, which is why this is worth checking before the first serious heat stretch.
- The basics matter: water, a real cool-down area, training, emergency response, acclimatization, and a written plan.
- This is not just about comfort. It is about running a safer kitchen before summer makes the work harder to manage.
Download the Cal/OSHA Indoor Heat Fact Sheet
This employer fact sheet is a practical place to start if you want to confirm your current process against Cal/OSHA’s requirements.
When operators think about heat risk, they often picture outdoor crews, not the back of house. But in California, indoor heat is a workplace issue too. And for restaurants, that matters before summer, not after it. Many kitchens already deal with hot surfaces, steam, and boiling liquids as part of normal service.
If part of your kitchen reaches 82°F while people are working, Cal/OSHA’s indoor heat rule may apply. The practical question is not whether the building has air conditioning somewhere. It is what conditions are like where your team is actually working.
Heat illness is not just a compliance issue. It is also a workers’ comp exposure issue, because the gaps that lead to preventable claims often show up in operations before they get management attention.
Why this matters before summer
A line that already runs hot in spring can become harder to manage once outdoor temperatures climb, service speeds up, and newer staff are added to the schedule. That is why this is a good time to check the basics before hotter conditions expose a gap.
Does the rule apply to restaurant kitchens?
In plain terms, yes, it can.
The rule is already in effect. For operators, 82°F is the main number to understand, and restaurant kitchens are not an edge case.
What operators should confirm now
Start with drinking water. Employees need access to potable water that is fresh, suitably cool, free of charge, and close to the work area and the cooling area. Then look at your cool-down space. The rule expects a real cool-down area below 82°F, not an informal corner near the line. A nearby office or break room may work if it actually stays cool enough and is away from radiant heat.
Then review the parts that many restaurants handle informally but do not always document well. That includes employee and supervisor training, emergency response, close observation during acclimatization, and a written Indoor Heat Illness Prevention Plan that ties the whole process together.
A new hire’s first two weeks on a hot station are an acclimatization issue, not just a scheduling issue. Cal/OSHA expects close observation during that window.
The blind spots that matter most
The biggest mistakes are usually practical. One is assuming that the dining room thermostat reflects what the staff is experiencing in the kitchen. Another is treating informal breaks as the same thing as a designated cool-down area. A third is failing to treat new or newly assigned workers on hot stations as an acclimatization issue. Those are the blind spots most likely to leave an operator thinking the basics are covered when they are not.
What changes when conditions get hotter
The next number to know is 87°F. At that point, employers must implement engineering and administrative controls, along with personal heat-protective equipment, to minimize the risk of heat illness. And in some cases, the stricter control requirement can be triggered earlier at 82°F, including situations involving clothing that restricts heat removal or areas with high radiant heat.
In restaurant terms, a line cook working near a char broiler, open flame, or other strong radiant heat source may already be in the stricter control zone at 87°F, before the temperature reaches 87°F.
For restaurants, the practical translation is straightforward. Ventilation and cooling improvements, heat shielding, isolating heat sources, adjusted schedules, job rotation, more frequent breaks, and shorter exposure periods on the hottest stations are the kinds of controls that make the most sense in kitchen environments.
What to do this week
Walk the back of house with this question in mind: where does your team actually get hot, and what is your process when they do?
Confirm water access. Confirm your cool-down area. Confirm who is responsible for monitoring new staff during hotter periods. Confirm that supervisors know which symptoms to watch for and what to do if someone shows signs of heat illness. Then confirm that your written plan reflects what happens in the real kitchen, not just what is supposed to happen on paper.
This is the kind of issue that is easier to tighten up before summer than in the middle of a rush. And if you’re also doing a broader pre-summer walkthrough, our spring restaurant safety reset covers other risks worth checking now.
Resources You Can Use Today
Download the Cal/OSHA Indoor Heat Fact Sheet and confirm your water, cool-down, training, and written-plan basics before the first serious heat stretch exposes a gap.
CRMBC sees what these gaps cost when they turn into claims, which is why this kind of prevention work matters before summer, not during it.
You can also review Risk Reduction Realities for more restaurant-specific safety guidance.
Need help thinking through the right next step for your restaurant or group?
Kaya Stanley is an attorney, published author, business owner, and highly sought-after strategic turnaround expert. Ms. Stanley serves as CEO and Chairman of the Board for CRMBC, the largest restaurant workers’ compensation self-insured group in California, and she is the Licensee for TEDxReno, an independently organized TEDx Event.
Throughout her 22 years of practicing law, Ms. Stanley has served as outside counsel for Wal-Mart and Home Depot. She was voted one of the country’s “Top 25 OZ Attorneys” by Opportunity Zone Magazine and published a best-selling book called “The Employer’s Guide to Obamacare.” Before that, she earned her master’s degree in social work and public policy, after which she worked with at-risk girls in Detroit and lobbied for women and families.
