Washington has a specific heat illness regulation: WAC 296-62-095. Here is what WA L&I requires, what gets cited, and how to close compliance gaps before an inspection.
Washington adopted permanent heat illness rules in 2023. Key thresholds: 89°F triggers cool-down rest; 100°F triggers all high-heat practices and buddy system. Among the strictest rules in the country for high-heat conditions.
"Washington's WAC 296-62-095 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." Washington State Department of Labor and Industries (L&I)
These six requirements form the core compliance framework. WA L&I 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 Washington |
|---|---|
| Water | Sufficient cool drinking water at no cost; at least 1 quart per employee per hour recommended |
| Shade | Adequate shade required when ≥89°F; employer must allow access on request at lower temps |
| Rest Breaks | Minimum 10-minute cool-down rest every 2 hours when ≥89°F; cannot be skipped |
| Acclimatization | Required for all new and returning workers during first 14 days; written acclimatization plan at ≥100°F |
| Training | Training required before first day of outdoor work; annual refresher; covers symptoms and first aid |
| Written Plan | Written Heat Illness Prevention Plan with emergency response procedures; must be available at worksite |
Washington L&I cited 112 businesses for heat-related violations in 2024. Construction and outdoor cleaning services were heavily targeted. A Seattle commercial cleaning contractor received a $6,500 citation in 2023 for failure to provide cool-down rest periods during a heat event exceeding 100°F.
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 Washington, 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 →Shade access on request applies at any temperature above 89°F. Mandatory shade, cool-down rests every 2 hours, and additional protections are required when temperatures reach 89°F. The most stringent high-heat practices apply at 100°F and above.
When outdoor temperatures reach 100°F, Washington L&I requires employers to implement a buddy system or other means to ensure employees are observed for heat illness symptoms. Employees must not work alone during high-heat conditions.
Yes. WAC 296-62-095 applies to all employers regardless of size. A written Heat Illness Prevention Plan is required and must be available at each worksite. There is no small-employer exemption.
Serious violations carry penalties up to $7,000 per violation. Willful or repeat violations can reach $70,000. Washington L&I prioritizes heat inspections June through September and responds rapidly to heat illness complaints.
Other state heat illness guides: