Kathy Davis, Communications
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| Photo courtesy of Washington Department of Natural Resources. |
With nearly double the rate of wildfires reported across Washington State still early in this fire season, new rules aim to help protect outdoor workers from the health risks of being exposed to wildfire smoke.
On July 16, the state Department of Labor & Industries filed emergency rules that spell out responsibilities for employers, including state agencies like WSDA, to identify harmful smoke risks, notify employees, and eliminate or reduce workers’ exposure. The rules took immediate effect, while L&I proceeds with the process to make them permanent.
“In past wildfire seasons, we’ve had little guidance to address our workers’ concerns about smoke exposure,” said Ron Hussung, WSDA’s Safety Program manager. “These L&I rules give us clarity around when we’re most at risk and specific steps we need to take as an employer.”
These new rules apply specifically to people working outdoors. They exempt worksites within enclosed buildings and vehicles with windows and doors mostly kept closed (except for entry and exit) and air-filtration systems.
The rule sets the standard for dangerously poor air quality at 2.5 PM (particulate matter), which means suspended solid or liquid particles are at or below 2.5 micrometers in diameter. The fine particles at this level are the most concerning hazard because they get deep into the lungs, worsening conditions like asthma, and affecting heart health.
Employer responsibilities
WSDA managers and supervisors will now be responsible for monitoring air quality conditions in the areas where employees are working outdoors. They can check websites such as the EPA's AirNow website or state Department of Ecology's Air Monitoring Network and download mobile apps like "EPA AirNow" or "Air Quality WA."
When workers are at risk of exposure to hazardous levels of wildfire smoke, employers must take actions to eliminate or reduce their exposure. These measures may include:
- Moving work to enclosed buildings, structures, or vehicles where the air is adequately filtered.
- Moving employees to areas with lower smoke exposure.
- Reducing work intensity.
- Providing additional rest periods.
- Providing employees with respirators, such as an N95 or a KN95 disposal mask, at no cost for voluntary use when levels of particulate matter are high.
The WSDA Safety Office is contacting agency supervisors to help them obtain the supplies they need to keep workers safe from smoke exposure, according to Ron. Since use of respirators for this purpose is voluntary, no medical exam or fit test is required, he noted.
Although it’s not required, WSDA and L&I recommend taking action to reduce employee exposure to dangerous air at even lower levels of particulate matter, especially for workers with asthma or other lung conditions.
The new rules also require employers to train employees and supervisors about wildfire smoke. WSDA staff should view the 15-minute wildfire smoke training video on L&I’s website.
In summary: With nearly double the rate of wildfires reported across Washington State still early in this fire season, new rules aim to help protect outdoor workers from the health risks of being exposed to wildfire smoke. On July 16, the state Department of Labor & Industries filed emergency rules that spell out responsibilities for employers to identify harmful smoke risks, notify employees, and eliminate or reduce workers’ exposure. Learn more in this Insider blog post.



