Oregon has a specific heat illness regulation: OAR 437-002-0156 (Division 2, Subdivision R). Here is what Oregon OSHA requires, what gets cited, and how to close compliance gaps before an inspection.
Adopted permanent rule in June 2022. Triggers at 80°F for shade/water/rest, 90°F for work/rest schedules and acclimatization monitoring, 95°F for cool-down areas required. Oregon OSHA issued 89 heat illness citations in 2024.
"Oregon's OAR 437-002-0156 (Division 2, Subdivision R) applies to all outdoor places of employment — including commercial pressure washing operations. Employers must provide water, shade, rest periods, acclimatization, training, and a written Heat Illness Prevention Plan. Each element is independently citable." Oregon OSHA
These six requirements form the core compliance framework. Oregon OSHA inspectors verify each independently. Missing any single element is sufficient grounds for a citation — even if the other five are in place.
| Requirement | What's Required in Oregon |
|---|---|
| Water | At least 1 quart per employee per hour; cool, potable water at no cost |
| Shade | Sufficient to accommodate all employees at one time; ≥80°F triggers requirement |
| Rest Breaks | Minimum 10-minute preventive cool-down rest when ≥90°F; employer may not discourage rest |
| Acclimatization | 14-day acclimatization schedule for new and returning employees; increased monitoring at ≥90°F |
| Training | Annual training before first outdoor work each year; covers symptoms, first aid, rights |
| Written Plan | Written Heat Illness Prevention Plan required; must address emergency response and acclimatization |
Oregon OSHA's 2024 heat enforcement focused heavily on agriculture and outdoor services. A Medford landscaping and pressure washing company was cited $9,500 in August 2023 for failing to provide adequate shade and maintain acclimatization records during a 97°F heat event.
Heat illness violations are among the most straightforward citations in OSHA enforcement: the standard is clear, the failure is visible (no shade, empty water jugs, no written plan), and the injury creates automatic scrutiny. Pressure washing contractors are a common target because outdoor work is inherently high-exposure and crew sizes are often small enough that written plans are overlooked.
A written Heat Illness Prevention Plan creates the paper trail that separates a correctable general violation from a serious or willful citation. In Oregon, employers with a written plan who experience a heat illness incident face substantially lower penalty exposure than those without one.
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Get Safety Pack →Yes. Oregon OSHA's OAR 437-002-0156 applies to all outdoor work, including pressure washing. The rule is tiered: obligations begin at 80°F and increase at 90°F and 95°F.
When temperatures reach 95°F or above, employers must provide a cool-down area (e.g., air-conditioned vehicle, shaded structure with fans) where employees can rest. This is in addition to shade access required at 80°F.
Oregon OSHA requires training records to be maintained for at least 3 years. Records must document who was trained, when, and what topics were covered. Acclimatization monitoring logs must also be retained.
Serious violations carry penalties up to $13,653 per violation. Willful or repeat violations can reach $136,532. Oregon OSHA averages 4.2 citations per heat-related inspection in outdoor services.
Other state heat illness guides: