Joseph S. Persoff


Los Angeles
T +1.310.442.8838
F +1.310.820.8859


A dedicated employment litigator, Joseph Persoff is determined to help clients both comply with the law and stay true to their business models. His experience with employment claims and class action suits includes playing an instrumental role in drafting appellate briefs and trial court motions, including summary judgment motions, post-trial motions and anti-SLAPP motions, as well as arguing multiple cases before courts of appeal. Well-versed on a range of employment issues, Joseph has offered critical support on matters that involved discrimination, retaliation and harassment.


  • Argued cases before the Ninth Circuit Court of Appeals and the California Court of Appeal.
  • Drafted appellate briefs, petitions for writ of mandate and petitions for review to the California Supreme Court.
  • Prepared trial and appellate court motions, including oppositions to demurrers, motions for summary judgements, anti-SLAPP motions, motions in limine, motions for new trial and motions to dismiss an appeal.

Recognitions and Memberships


  • Los Angeles County Bar Association


  • Los Angeles World Affairs Council: Young Professionals

Prior Positions

  • The Honorable Harry Pregerson, United States Court of Appeals, Ninth Circuit: Judicial Extern (2013)


  • U.S. Court of Appeals, Ninth Circuit
  • U.S. District Court, Central District of California
  • U.S. District Court, Southern District of California
  • U.S. District Court, Eastern District of California
  • U.S. District Court, Northern District of California
  • California


  • J.D., University of Southern California Gould School of Law, 2015; Southern California Law Review, Senior Submissions Editor
  • B.S., Syracuse University, 2010


In The Blogs

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Employment Class Action Blog
Update on the TRO Issued in the Case Involving California's AB 51 Anti-Arbitration Law
By John B. Lewis, Joseph S. Persoff
January 16, 2020
On Jan. 10, 2020 Chief District Judge Kimberly J. Mueller further defined the scope, issues and duration of the Temporary Restraining Order (TRO) she initially issued on Dec. 30, 2019. We blogged about the new California legislation and...
Employment Class Action Blog
California Court of Appeal Concludes Practice Is More Important Than Policy for Class Certification
By Joseph S. Persoff
December 30, 2019
A California Court of Appeal issued a Christmas Eve ruling setting out the significance of a written employment policy for class certification purposes. In Cacho v. Eurostar, Inc., the court held that a correct, yet incomplete, meal break...
Employment Class Action Blog
District Court Temporarily Enjoins Enforcement of California's AB 51 Anti-Arbitration Provision
By John B. Lewis, Gregory V. Mersol, Joseph S. Persoff
December 30, 2019
A federal judge has issued a temporary restraining order halting the enforcement of Assembly Bill 51, California’s latest attempt to prevent arbitration of claims brought under the California Fair Employment and Housing Act. We initially...
Employment Class Action Blog
California Court of Appeal Applies Dynamex Retroactively
By Joseph S. Persoff
October 14, 2019
This week, a California Court of Appeal concluded in a class action case that the California Supreme Court’s Dynamex decision applies retroactively. In another case, Vazquez v. Jan-Pro Franchising International, the Ninth Circuit Court of...
Employment Class Action Blog
California Enacts Anti-Arbitration Legislation, but Will the FAA Limit Its Potential Impact? Not Entirely.
By John B. Lewis, Joseph S. Persoff
October 11, 2019
On Oct. 10, California Governor Gavin Newsom signed into law an attempt by California’s Legislature to limit arbitration of claims under California’s Fair Employment and Housing Act (“FEHA”). FEHA prohibits harassment, discrimination and...