California regulators under Gov. Gavin Newsom’s administration have proposed separate indoor heat rules for prisons and detention facilities that would not start until 87F — 5 degrees higher than the 82F threshold used for most other indoor workplaces. For clinicians, that means continued risk of heat exhaustion, heat stroke, and worsening cardiovascular and respiratory disease among correctional staff and incarcerated people in aging, largely non-air-conditioned facilities.

The Move

• Cal/OSHA released draft rules in May creating a separate heat standard for prisons, local detention centers, and juvenile facilities.

• The proposal would trigger protections at 87F, unlike California’s 2024 indoor workplace rule, which starts key protections at 82F and also uses heat index thresholds.

• The prison proposal would not require employers to account for humidity, radiant heat, or heat index, despite evidence that those factors increase physiologic stress.

Why it Matters for Care

• Extreme heat is the leading weather-related killer in the U.S. and can precipitate heat exhaustion, heat stroke, dehydration, acute kidney injury, and exacerbations of Heart disease and respiratory illness.

• Correctional clinicians may see more heat-related symptoms in both workers and incarcerated patients because many facilities are old, poorly insulated, and largely lack air conditioning.

• In 2024, California prisons logged 86 days with indoor temperatures of at least 90F in at least one institution, and 46 days at 95F or higher.

Between the Lines

• The central driver is cost: state estimates to cool prisons have ranged from about $900,000 to as much as $6 billion upfront, and the Newsom administration has cited staffing and infrastructure constraints.

• Officials argue prisons have unique operational and security barriers, including the need to relieve guards for cooldown breaks and concerns about redesigning spaces for cooling.

• Worker advocates and public health experts say the separate standard creates a lower tier of protection without a medical basis, even as climate change increases heat exposure across California.

What to Watch

• Whether Cal/OSHA revises the draft before formal adoption, especially on temperature thresholds and inclusion of heat index and humidity.

• Whether labor unions, public health groups, or affected workers challenge the rule politically or in court.

• Whether California discloses a clearer fiscal analysis and timeline, as the state says the schedule for final protections remains undetermined.

Source: KFF Health News