About Zachary Y. Haddad

Zachary Haddad is an Associate Attorney in the Workers’ CompensationDepartment at Mastagni Holstedt, APC. With compassion and a results-drivenapproach, Zack guides injured workers through the complexities ofCalifornia’s workers’ compensation system — ensuring they understand theirrights and secure the benefits they deserve.Zack earned his Juris Doctor from the University of California College ofthe Law, San Francisco (formerly UC Hastings). While in law school, hechanneled his passion for public service into meaningful leadership andadvocacy. As President of Law Students for Sensible Drug Policy (LSSDP), hespearheaded fentanyl policy reform efforts in San Francisco’s Tenderloinneighborhood, responding to the tragic loss of a fellow student and thebroader public health crisis affecting the community. He also served underProfessor Amy Spivey in the UC Hastings Low Income Taxpayer Clinic,providing critical legal assistance to low-income individuals navigatingtheir tax debt.Before joining Mastagni Holstedt, Zack honed his litigation skills as a lawclerk at Calone & Harrel Law Group in Stockton, CA. Working under ShaunCulbreath, Esq., he focused on probate litigation, motion practice, anddiscovery in complex civil matters — experience he now leverages toeffectively advocate for injured workers.Zack earned his bachelor’s degree in political science from CaliforniaLutheran University. He is an active member of the Sacramento County BarAssociation, and remains deeply committed to staying at the forefront ofworkers’ compensation law and community advocacy.Outside the office, Zack finds balance and inspiration in the outdoors,world travel, challenging workouts, and quality time with those close tohim.

 

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Services

Areas of Law

  • Workers Compensation

Practice Details

  • Payment Information
    Payment & Cost Features
    Free initial consultation
  • Firm Information
    Position
    Associate
    Firm Name
    Mastagni Holstedt, APC

Experience

  • Bar Admission & Memberships
    Admissions
    2025, California
  • Education & Certifications
    Law School
    University of California College of the Law, San Francisco
    J.D.
    Other Education
    California Lutheran University
    B.S.
    Political Science

Attorneys FAQs

  • What year was this attorney first admitted to the bar?
    Zachary Y. Haddad was admitted in 2025 to the State of California.
  • How many attorneys are in this law firm?
    Mastagni Holstedt, APC has 29 attorneys at this location.
  • What law school did this attorney attend?
    Zachary Y. Haddad attended University of California College of the Law, San Francisco.
  • What year was this attorney's law firm established?
    Mastagni Holstedt, APC was established in 1976.
  • Is this attorney listed in the Bar Register of Preeminent Lawyers?
    Zachary Y. Haddad is listed in the Labor and Employment Law, Personal Injury, Social Security and Workers Compensation section of the Bar Register of Preeminent Lawyers.