If your certificate lapses past your birthdate you will be required to pay a double fee. Lapses beyond 90 calendar days will require retesting. You may not work in the plumbing trade with an expired plumber's certificate. The holder is judged to be incompetent. The holder violates any of the provisions of RCW 18.106.
State law defines such work as contracting, which requires a different registration.
One trainee for every certified journeyman plumber working on a commercial jobsite. Two trainees for every certified specialty plumber or certified journeyman plumber working on a residential jobsite. Labor and Industries is an Equal Opportunity and Affirmative Action employer.