Serving Washington State

A man and a woman stand in an ornate gallery above a legislative chamber.

A partnership between the UW Department of Environmental & Occupational Health Sciences and the State of Washington creates safer workplaces and healthier workers

Washington counties where DEOHS works

DEOHS provides health and safety services and leads environmental and occupational research projects in 34 of 39 Washington counties.

Data from 2020

Three department members stand in front of a legislative office holding paperwork.
DEOHS Chair Michael Yost and Assistant Professor Elena Austin meet with state Representative Tina Orwall.

The Washington State Legislature established a unique relationship with the UW Department of Environmental & Occupational Health Sciences (DEOHS) more than 60 years ago that continues to support innovative approaches to protect Washington’s workers.

In 1963, the Legislature appropriated a portion of workers’ compensation funds to DEOHS to advance our work in occupational health and safety and unanimously approved a legislative mandate that calls for DEOHS to provide services and conduct research for “the prevention of industrial and occupational disease among workmen, the promotion and protection of safer working environments and dissemination of the knowledge and information acquired . . .”

Additional funding from federal and state agencies supports other workplace research and service programs led by DEOHS, including our work on the health effects of extreme heat, wildfire smoke, chemical exposures and the COVID-19 pandemic. Our research and services reach workers in nearly every county in Washington state and across the Pacific Northwest.

In 2022, DEOHS environmental and occupational health programs were ranked #7 in the world—and #3 in the US—by US News & World Report.

Collaborating to protect our state’s workers

With this funding, DEOHS conducts research on safe workplaces, offers an array of services to individuals and businesses in Washington and provides real-world training opportunities for our students. Students serve as interns with state and local health departments, the Washington State Department of Labor & Industries (L&I), the Washington State Department of Ecology and other agencies. 

Our faculty experts work closely with L&I and the Washington State Department of Health, among other state agencies, using a research-to-practice model to translate the latest scientific discoveries into better health.

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Our services


Workplace safety consultations

Our Field Research and Consultation Group provides companies with on-site occupational health and safety consultations, with a special focus on small businesses


Laboratory analysis

Our Environmental Health Lab specializes in chemical hazard identification, monitoring and analysis to support industrial hygiene and occupational medicine professionals


Caring for ill and injured workers

Multidisciplinary experts in our Occupational and Environmental Medicine Clinic diagnose, treat and help prevent work-related injuries and illnesses


Health and safety training

We offer continuing and professional education for working professionals in Washington state through our nationally recognized training center



Supporting Washington policymakers

Our research experts provide expert guidance and evidence-based approaches to inform the work of state legislators and government leaders in creating safe workplaces and healthy communities. Recent examples include:

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Hanford Healthy Energy Worker Board

DEOHS co-chairs a board addressing chemical exposure and worker health issues at Hanford.

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State pesticide boards

DEOHS served on two work groups examining pesticide drift and aerial pesticide applications in forestlands.

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Washington Environmental Health Disparities Map

State lawmakers approved a clean energy law in 2019 that sets targets for achieving zero-carbon electricity by 2045. The law builds on an interactive mapping tool developed by DEOHS and our partners that pinpoints Washington communities most at risk from pollution and climate change. DEOHS is conducting additional research to inform a new cumulative impact analysis for state lawmakers as part of the new law.

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Jet pollution at Sea-Tac

A two-year study led by DEOHS and funded by the Washington State Legislature found that communities underneath and downwind of jets landing at Seattle-Tacoma International Airport are exposed to a type of ultrafine particle pollution that is distinctly associated with aircraft. The discovery creates opportunities to investigate the health effects of aircraft-related pollution and how different neighborhoods are impacted by it.

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Exploring alternatives to PPE

DEOHS worked with L&I to evaluate homemade face mask materials for use during the COVID-19 pandemic and to assess whether disinfection methods could allow health care workers to reuse PPE.

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One Health Collaborative

DEOHS is working with the Department of Health and others to develop a state plan to limit inappropriate use of antibiotics and track antimicrobial resistance in humans and animals.