Sheppard MullinPartner

Matthew Martin Sonne

About Matthew Martin Sonne

Matthew Martin Sonne is a lawyer practicing labor and employment, labor and employment counseling, employee hiring/discipline/termination and 25 other areas of law. Matthew received a B.A. degree from Claremont McKenna College, and has been licensed for 21 years. Matthew practices at Sheppard Mullin in Costa Mesa, CA.

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Services

Areas of Law

  • Labor and Employment 1
    • Wrongful Termination
  • Insurance
  • Other 25
    • Labor and Employment Counseling
    • Employee Hiring/Discipline/Termination
    • Employment Agreements
    • Handbooks and Personnel Policies
    • Harassment Investigation and Training
    • Unfair Competition and Trade Secrets
    • Wage and Hour Regulations
    • Workplace Violence
    • Labor and Employment Litigation
    • Discrimination, Harassment, and Retaliation
    • Wage and Hour Class Actions
    • International Reach
    • Latin America
    • Government Contracts, Investigations & International Trade
    • Public Policy and Government Affairs
    • Construction
    • Entertainment, Technology and Advertising
    • Fashion, Apparel and Beauty
    • Financial Services
    • Food and Beverage
    • Healthcare
    • Hospitality
    • Mortgage Banking
    • Retail
    • Telecom

Practice Details

  • Languages
    Spanish
  • Firm Information
    Position
    Partner
    Firm Name
    Sheppard Mullin
  • Representative Cases & Transactions
    Cases
    Experience: Published Decisions: Gau et al. v. Hillstone Restaurant Group, Inc., Case No. 20-CV-08250 (N.D. Cal. 2022)(court denies class certification in its entirety in favor of restaurant employer).
    Amaro et al. v. Anaheim Arena Management, LLC, 69 Cal.App.5th 521 (2021)(PAGA settlement may extinguish claims from outside the limitations period).
    Townley v. BJ's Restaurants, Inc., 37 Cal.App.5th 179 (2019) (Employer completely prevails on summary judgment in PAGA case alleging unreimbursed business expenses for slip-resistant shoes).
    Morgan v. Wet Seal, Inc., 210 Cal.App.4th 1341 (2012) (Court of Appeal affirms denial of class certification in its entirety in reimbursement claim brought against retail client).
    Chaaban v. Wet Seal, Inc., 203 Cal.App.4th 49 (2012) (After prevailing in a three-week jury trial in a wrongful termination case, retail employer prevails in seeking to recover its expert witness costs/fees from plaintiff. In parallel case, employer also defeated class certification in its entirety).
    Madrigal v. Tommy Bahama Group, Inc., 2011 WL 10511339 (C.D. Cal. 2011) (court denies class certification in its entirety in wage-hour case against retail/restaurant employer).
    Corder v. Houston's Restaurants, Inc ., 424 F. Supp. 2d 1205 (C.D. Cal. 2006) (held meal
    rest periods violations were penalties subject to a one-year, rather than a four-year, statute of limitations).
    Recent Victories: Achieved a complete dismissal of 'suitable seating' claims under PAGA against a retail client in Santa Clara Superior Court.
    Defeated class certification for a manufacturing company on all counts in a wage
    hour class action before the Orange County Superior Court.
    Successfully defended a national clothing retailer in a jury trial before Orange County Superior Court. The Plaintiff alleged wrongful termination
    retaliation in violation of public policy. Won a complete defense verdict.
    Achieved what may be the first trial court ruling in California enforcing a class action waiver after the California Supreme Court's Gentry decision made such waivers difficult to enforce.
    Defeated class certification for a retail service company on all counts in a wage
    hour class action before the Los Angeles County Superior Court.

Experience

  • Bar Admission & Memberships
    Admissions
    2005, California
    U.S. District Court for the Northern, Central, and Southern Districts of California
    United States Court of Appeals for the Ninth Circuit
    Memberships

    Memberships

    •Member, Orange County Bar Association, Labor and Employment Section
    •Member, American Bar Association

  • Education & Certifications
    Law School
    University of Virginia
    Class of 2005
    J.D.
    Other Education
    Claremont McKenna College
    B.A.
    magna cum laude

    Claremont McKenna College
    B.A.
    2000 Phi Beta Kappa

Matthew Martin Sonne

Partner at Sheppard Mullin
Not yet reviewed

650 Town Center Drive, 10th FloorCosta Mesa, CA 92626U.S.A.

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