John R. Holstedt

John R. Holstedt is a workers’ compensation lawyer and managing partner at Mastagni Holstedt, A Professional Corporation, whose practice centers on litigation at the trial and appellate levels. He handles workers’ compensation claims involving injured employees and complex disputes arising from workplace injuries. His practice extends to personal injury law and labor and employment matters. He has participated in oral arguments before California’s Third District Court of Appeal involving workers’ compensation and personal injury issues. He serves as managing partner of a workers’ compensation department.

John earned his J.D. from McGeorge School of Law, University of the Pacific. He received his B.A. from the University of Wyoming. His legal education provided a foundation for decades of work involving workers’ compensation litigation, civil claims, and appellate advocacy. His academic background supports his analysis of statutory requirements, evidentiary issues, workplace injury claims, and other legal questions that arise during contested proceedings.

John represents injured workers through workers’ compensation proceedings, including matters requiring trial or appellate advocacy. His work addresses disputes involving workplace injuries, benefits, and related legal rights. He further handles personal injury cases and labor and employment matters. His appellate experience includes presenting arguments on significant workers’ compensation and personal injury questions before the Third District Court of Appeal. This combination of trial and appellate work gives him extensive experience across different stages of contested claims.

John R. Holstedt is admitted to practice in California state courts and the US District Court for the Eastern District of California. His professional memberships include the State Bar of California, California Trial Lawyers Association, Capitol City Trial Lawyers Association, and Sacramento County Bar Association. His practice remains focused primarily on workers’ compensation litigation while extending to related personal injury and employment matters.

Law Office Affiliations

• Managing Partner, Mastagni Holstedt
• Member, State Bar of California
• Member, California Trial Lawyers Association
• Member, Capitol City Trial Lawyers Association
• Member, Sacramento County Bar Association

Licensed State

• California

Education

•  McGeorge School of Law, University of the Pacific
  Juris Doctor (JD)
• University of Wyoming
  Bachelor of Arts

Awards & Badges