Susan Harthill, Chair and Chief Judge

Susan Harthill was appointed as Chair of the Board and Chief Administrative Appeals Judge in May 2022. She has practiced and taught employment law for the entirety of her legal career. Prior to her appointment to the ARB, Chief Judge Harthill practiced employment law in the Washington D.C. office of a global law firm. Prior to that, she served as Deputy Solicitor of Labor for National Operations in the Office of the Solicitor at the DOL, where she oversaw the legal advice provided to all DOL agencies under the laws administered and enforced by DOL. Chief Judge Harthill was also formerly a tenured Professor of Law, teaching employment law and employment discrimination, civil procedure and evidence, and an employment lawyer in private practice in Washington D.C. She has also served as a lawyer at the Legal Aid Society of D.C. and as a Commissioner on the Jacksonville Human Rights Commission in Jacksonville, Florida. Chief Judge Harthill earned a B.A. from the University of Leeds, England, an M.Sc. from the University of Bristol, England, and a J.D. from the University of Cincinnati College of Law. She is a member of the District of Columbia Bar Association.

Tammy L. Pust, Vice Chair and Member

Tammy Pust was appointed to the Administrative Review Board in June 2022. She comes to the ARB with decades of labor, employment and administrative law experience. As the Chief Administrative Law Judge for Minnesota's Office of Administrative Hearings, Judge Pust presided over administrative challenges to state and local government action. She earlier served as the Chief Legal and Compliance Officer for the Minnesota Department of Education and as an Assistant Attorney General and Policy Director for Children and Families in the Minnesota Attorney General's Office.  Judge Pust's most recent public service was for the City of Boston, where she was a Senior Advisor for Employee Relations and Legal Compliance with the Boston Public Schools and the City's Human Resources Transformation Program until her appointment as Boston's Director of Labor Relations. When not directly engaged in public service, Judge Pust practiced employment, labor and education law as a partner in three law firms in Minneapolis and Saint Paul, Minnesota, and recently taught Administrative Law at Mitchell Hamline School of Law. Judge Pust graduated from Concordia College in Moorhead, Minnesota and from the University of Minnesota Law School. She is a member of the Minnesota Bar Association.

Ivey Warren, Member

Ivey Warren was appointed to the Administrative Review Board in January 2023. She comes to the ARB previously serving as Chief of Staff to the Office of Workers’ Compensation Programs at the Department of Labor. Judge Warren earlier served as a Program Manager for the District of Columbia’s Office of Paid Family Leave. Prior to that, she served as Attorney Advisor to the Board of Veterans’ Appeals within the Department of Veterans Affairs, and to the 9/11 Victims Compensation Fund. She was also formerly a litigation attorney, practicing personal injury and administrative law in the state of Maryland. Judge Warren earned a B.A. degree in Political Science from the University of South Carolina, a J.D. from the University of Maryland School of Law, and is a member of the Maryland Bar Association.