Home > Workmens Compensation > Be Prepared for Summer – Outdoor Heat Exposure (OHE, Heat Stress)

Be Prepared for Summer – Outdoor Heat Exposure (OHE, Heat Stress)

Working outdoors in hot weather can result in serious illness or even death.  Workers exposed to extreme heat may experience symptoms of heat-related illnesses (HRI), such as heat cramps, heat rash, heat exhaustion, fainting, heat stroke, and other symptoms.

Heat-related illness is also linked to injuries from falls, equipment operation accidents, and other on-the-job incidents. Such incidents can happen when someone with heat stress becomes fatigued, dizzy, confused, or disoriented.

Employers must provide training to workers so they understand what heat stress is, how it affects their health and safety, and how it can be prevented.  The Outdoor Heat Exposure Rule WAC 296-62-095 applies from May 1 through September 30, every year, when exposures are at or above a specific temperature (listed in Table 1 of the rule).

General Rules

Man working on a grape vine wearing long sleeve shirt and a bandana on his head out in the sun. Caption: Work early or late during the coolest parts of the day.  Acclimatize (adapt) to the heat gradually through short exposures followed by longer periods of work to reduce heat stress.

Rules for Specific Workplaces


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