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PERC is headed by three part-time citizen commissioners who are appointed by the Governor for five-year terms. The Commission hears and decides appeals on decisions from agency staff (Examiners and the Executive Director) and has rule-making authority.




Mark S. Lyon, Chairperson

Mark S. Lyon was appointed to the Commission in March 2024 and is currently serving his first term as Chairperson.

Lyon has been practicing law in Washington with an emphasis on labor and administrative law for over 40 years. From January 2005 to December 2021, he served as an Assistant Attorney General for the State of Washington and provided litigation services and legal advice to state agencies, including the Department of Transportation, the Department of Enterprise Services, and the Consolidated Technology Services Agency. Lyon retired from the Attorney General's Office at the end of 2021.

During his last five years with the AGO, Lyon served as the primary legal representative for PERC, providing legal advice to the Commission, agency director, and primary staff. He also represented PERC in litigation in the Washington superior and appellate courts.

Between 1981 and 2004, Lyon served as the General Counsel to the Washington Public Employees Association, UFCW Local 365, where he acted as the primary legal advisor to a public employee labor union representing state and local government workers and appeared before administrative tribunals, trial courts, and appellate courts throughout Washington state.

Lyon received a Juris Doctor Degree in 1981 from the University of Puget Sound Law School (now Seattle University Law School).

His term expires in September 2026.

Commission Meetings, Agendas, and Minutes

The Commission meets regularly on the second Tuesday of each month. Click here to register if you would like to attend. Meetings are currently being held in Olympia and via Zoom webinar. After registering for the webinar, you will receive a link to connect to the meeting. Participants are able to view the Commission and executive staff. Participants’ video and audio are disabled, but attendees can communicate questions via the Zoom chat feature. To request disability accommodations, please contact Diane Tucker at least one week before the meeting at (360) 570-7335 or

Scheduled meeting dates and locations are listed below. The agenda and the link to register to attend are posted on the home page at least a week before the meeting. Minutes of each meeting are approved at the next meeting and posted after.

2024 Meetings

January 9, 2024 (Canceled)July 9, 2024 (Canceled)
February 13, 2024 (Olympia & Zoom)August 13, 2024
March 19, 2024 (Olympia & Zoom)September 10, 2024
April 9, 2024 (Olympia & Zoom)October 8, 2024
May 14, 2024 (Olympia & Zoom)November 12, 2024
Thursday, June 13, 2024 (Olympia & Zoom)December 2024 (No Meeting)

Archived Commissions Minutes

Commission Cases

Listed below are all cases pending before the Commission. The case number listed is a direct link to the decision being appealed.

Employer NameCase NumberDate Appealed
King County135058-U-22July 2, 2024
Washington State Department of Children, Youth, and Families136327-U-23June 26, 2024
King County 136189-U-23cMay 14, 2024
Seattle Housing Authority135318-U-22January 31, 2024
Federal Way School District138140-U-24April 5, 2024
City of Bellingham134913-U-22May 16, 2024
King County136581-U-23June 7, 2024
University of Washington135021-C-22June 6, 2024

Court Cases

This is a list of Public Employment Relations Commission cases on appeal in the various courts.

Employer NameDecisionCourt
Washington State Language Access Providers13355-BThurston County Superior Court
Washington State Language Access Providers13344-CThurston County Superior Court
Washington State Department of Children, Youth, and Families13329-CYakima County Superior Court

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