The Spring 2021 regulatory agenda notes that OSHA is considering a regulation on heat illness prevention for both indoor and outdoor workers. A request for information is expected in October, and feedback would be used to develop a proposed rule, so a final standard is probably a couple of years away. Currently, OSHA uses the General Duty Clause to address heat hazards.
The agenda points out that workers in agriculture and construction are at highest risk, but indoor workers can be at risk also. OSHA notes that a rule may require addressing complex issues like heat stress thresholds, acclimatization planning, exposure monitoring, and medical monitoring. Several state-plan states (California, Washington, and Minnesota) already have heat illness regulations.
New workers in outdoor jobs are generally at highest risk for heat-related illnesses. Most incidents occur in the first four days on the job, before workers build up a tolerance for working in hot conditions.
The heat index considers both air temperature and humidity and is a better risk measure than air temperature alone. OSHA warns against relying on heat index alone, but notes that it may be helpful as part of a hazard assessment. Additional considerations include:
Employers should create a plan to prevent heat-related illness. Elements to consider include:
Since heat conditions can change rapidly, someone at the worksite should monitor conditions and adjust the plan throughout the workday. In industries such as delivery services where on-site monitoring isn’t feasible, consider training workers on heat illness and who to contact regarding any heat-related conditions that develop.
Working in hot conditions may be unavoidable, but can be done safely with precautions. Federal OSHA doesn’t yet have a standard on heat illness, but all employers must protect employees from heat-related hazards. Our archived webcast “Heat Stress: Keeping your cool when weather heats up!” from July 22, 2021, covered the causes of heat stress and steps employers can take to keep employees safe. Log in or register for a free trial to view the archived webcast.