About Daniel L. Osier

Daniel Osier is a senior associate and trial lawyer in the civil litigation department of Mastagni Holstedt, APC His practice focuses on complex civil litigation, catastrophic personal injury, wrongful death, and employment matters. Mr. Osier has been selected for inclusion in Northern California’s Super Lawyers, Rising Stars, annually for the last 4 years. He has successfully represented clients in matters ranging from motor vehicle collisions, premises liability, medical malpractice, insurance coverage disputes, products liability, government tort claims, Cal/OSHA workplace incidents, serious and willful misconduct petitions (Labor Code §4553), and employment disputes.

Mr. Osier has provided workshops to union clients on legal matters such as the “Firefighter Rule” (Civil Code §1714.9), insurance coverage issues, workers’ compensation/employer third-party lien and credit rights, employer negligence, and peace officer (Pitchess) privacy rights. He has also taught continuing legal education courses on civil procedure and discovery in state courts, as well as handling personal injury/workers’ compensation crossover cases and the legal issues arising from workplace injuries due to third party negligence.

Mr. Osier is a graduate of Santa Clara University School of Law (J.D. 2009) and San Diego State University (B.S. 2006). He is a native of Yolo County and currently lives in Davis with his wife and three children.

Awards

• Rated by Super Lawyers – (Selected to Northern CA Super Lawyers Rising Stars, 2017-2020)

• Sacramento Magazine 2020 – Top Lawyers

Memberships:

• State Bar of California

• Sacramento County Bar Association

• Capitol City Trial Lawyers Association

 

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Services

Areas of Law

  • Labor and Employment 1
    • Wrongful Termination
  • Litigation
  • Other 1
    • Employment & Labor

Experience

  • Bar Admission & Memberships
    Admissions
    2009, California
  • Education & Certifications
    Law School
    Santa Clara University School of Law
    Class of 2009
    J.D.
    Other Education
    San Diego State University
    Class of 2006
    B.S.

Contact Daniel L. Osier

Senior Associate at Mastagni Holstedt, A.P.C.
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1912 I StreetSacramento, CA 95811U.S.A.

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6689 Owens Drive, Suite 100Pleasanton, CA 94588U.S.A.

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9327 Fairway View Place, Suite 304Rancho Cucamonga, CA 91730U.S.A.

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2421 Broadway StreetRedwood City, CA 94063U.S.A.

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11918 Aviation BoulevardInglewood, CA 90304U.S.A.

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Office Hours:
  • Monday 08:00 AM - 06:00 PM
  • Tuesday 08:00 AM - 06:00 PM
  • Wednesday 08:00 AM - 06:00 PM
  • Thursday 08:00 AM - 06:00 PM
  • Friday 08:00 AM - 06:00 PM
  • Saturday 08:00 AM - 01:00 PM
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Other Office Locations

Pleasanton, CA

6689 Owens Drive, Suite 100Pleasanton, CA 94588U.S.A.

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Rancho Cucamonga, CA

9327 Fairway View Place, Suite 304Rancho Cucamonga, CA 91730U.S.A.

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Redwood City, CA

2421 Broadway StreetRedwood City, CA 94063U.S.A.

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Inglewood, CA

11918 Aviation BoulevardInglewood, CA 90304U.S.A.

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Attorneys FAQs

  • What is this attorney's primary practice area?
    The practice area Daniel L. Osier spends the most time on is Employment & Labor.
  • How many attorneys are in this law firm?
    Mastagni Holstedt, A.P.C. has 36 attorneys at this location.
  • What law school did this attorney attend?
    Daniel L. Osier attended Santa Clara University School of Law.
  • What year was this attorney's law firm established?
    Mastagni Holstedt, A.P.C. was established in 1976.
  • Is this attorney listed in the Bar Register of Preeminent Lawyers?
    Daniel L. Osier is listed in the Labor and Employment Law, Personal Injury, Social Security and Workers Compensation section of the Bar Register of Preeminent Lawyers.