David P. Mastagni

Practice Areas: Personal Injury, Employment & Labor, Professional Liability

Attorney David P. Mastagni serves as the initiator and managing collaborator of Mastagni, Holstedt, Amick, Miller & Johnsen, a law firm situated in Sacramento, California. Possessing extensive expertise as a trial attorney, he advocates for individuals entangled in intricate legal disputes encompassing personal injury, product accountability, professional misconduct, labor and employment law disputes, wage and hour conflicts, civil liberties lawsuits, and administrative law.

Throughout his professional journey, Attorney Mastagni has presided over in excess of 300 cases that culminated in verdicts, including over 100 instances presented before a jury, spanning both state and federal jurisdictions. He has also been an integral part of over 450 appellate cases, conducted at both state and federal appellate tiers, even participating in cases presented before the highest judicial body in the United States, the Supreme Court. A testament to his legal prowess, he secured the most substantial binding arbitration award for law enforcement in the United States in 2003. His influence extends to his appearances as a witness before the California state legislature, where he has provided insights on topics pertaining to law enforcement officers, labor unions, injured laborers, and consumer litigation. His contributions further encompass the formulation of several legislations, and he presently offers counsel in matters of election law and political action committees.

Mr. Mastagni is a frequent speaker and has long served as a designated attorney for the Peace Officers’ Research Association of California (PORAC), among various other legal involvements. He also holds membership in the Capitol City Trial Lawyers Association, the American Association for Justice, and Consumer Attorneys of California, in addition to other local, regional, and national legal associations.