L&I Workshop and Training Center

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Certification

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Plumber Certification

Plumbers in Washington must be certified by Labor and Industries. Get an overview of the requirements and process, and view frequently asked questions.

Safety Certification

The Department of Labor and Industries Workplace Safety and Health division offers certification in the following areas:

• Asbestos Abatement.
• Charter Vessels.
• Explosives.
• Maritime Cranes.

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