The California Division of Occupational Safety and Health (Cal/OHSA) has called for workplace safety rules that would require employers, including distribution center, warehouse and manufacturing facility owners, to protect workers from excessive indoor heat.

The California work safety board approved the temperature standards, which would require access to water and cool-down areas when temperatures exceed 87 degrees Fahrenheit; assessment, record and control of temperatures; and monitoring for signs of heat illness, among other rules. But the standards won’t be able to move forward without approval by the state’s Department of Finance, which opposes the rules.

A California Department of Finance spokesperson told the LA Times the rules could cost the state’s correctional and other facilities billions of dollars. The Times’ report touches on a history of heat-related work concerns in California, including at warehouses.

Cal/OHSA posted a its reasoning for the rule, and its proposed regulation.