Jim Rosen is the founder and managing partner of RosenSaba, LLP.  Jim has successfully litigated scores of business torts, professional liability claims, employment and harassment disputes, women’s rights issues, and catastrophic injury cases on behalf of a wide spectrum of individuals, local governments, businesses and multi-national corporations.  Jim has a near perfect success record as the lead trial lawyer in dozens of jury trials and arbitration proceedings.  He is also an expert witness concerning attorney ethics, standard of care, and responsible billing practices in high-stakes legal malpractice and breach of fiduciary duty matters.

In 2024, Jim was elected and served as the President of the Los Angeles Chapter of the American Board of Trial Advocates. The Los Angeles Chapter was named “Large Chapter of the Year” for 2024. He is currently a member of the Board of Trustees for the American Board of Trial Advocates Foundation, a 501(c) charitable organization dedicated to the preservation of the right to a jury trial, excellence, and the civility of the practice of law.

• Over $100 million in total plaintiffs’ verdicts and settlements achieved
• Not a single jury trial lost on the defense side
• Lead trial attorney in a high-profile legal malpractice and fraud case against a prominent international 2005 law firm and obtained a $38.5 million jury verdict in favor of the firm’s clients, Billy Blanks, Gayle Blanks and BG Star Productions, Inc. The verdict was the largest California legal malpractice verdict in years, the fifth largest verdict in the State of California and the 34th largest verdict nationwide in 2005, as reported by the Los Angeles Daily Journal and National Law Journal.
• Lead litigation and appellate attorney in E-Pass Technologies, Inc. v. Moses & Singer, LLP, et al. (2010) 189 Cal.App.4th 1140, holding for the first time under California law that a legal malpractice action based upon unsuccessful patent infringement claims may be brought in California Courts.
• Member of the trial team that obtained a unanimous verdict in the amount of $62,054,745 for claims against a former employee who took confidential information in order to start a competing business (This was the largest Business Litigation Jury Verdict in the State of California in 2023)

• “Top Professional Responsibility Lawyers” (Daily Journal 2022)
• 2025, 2024, 2023, 2022 and 2021 Lawdragon “500 Leading Plaintiff Employment & Civil Rights Lawyers” in the United States
• “AV – Preeminent” rated by Martindale-Hubbell and listed annually each year in the publication of Preeminent Lawyers in America.  An “AV” rating is the highest rating awarded and indicates an attorney has reached the height of professional skill, excellence and ethics
• “Top Rated Litigator” (2019-2021 by American Lawyer Magazine)
• “Best Personal Injury Attorneys” in America (each year 2012-2021 by American Lawyer Magazine)
• “Best Labor and Employment Attorneys” in America (each year 2007-2021 by American Lawyer Magazine)
• “Best Lawyers” in America (each year since 2006 by Best Lawyers)
• “Southern California Super Lawyer” (each year since 2006 by Super Lawyers Magazine)
• “America’s Top 100 Civil Defense Litigators” (2018-2025)
• 2016 Rosen Saba, LLP was named as a “Top Boutique Firm” by the Daily Journal

• Teaches “Civility Matters” at Loyola Law School each year since 2024
• Teaches “Civility Matters” at Southwestern Law School each year since 2024
• “Masters in Trial” Presentation for the Sacramento ABOTA chapter (2025)
• Joint Implicit Bias Training Based on Gender Identity, Mental Health, Race and Disability (2024)
• Speaker at CEB Presentation Conference “Business Litigation: Trial and Post-Trial Overview” (2016)
• Speaker at American Bar Association-National Legal Malpractice Conference “How Firm Compensation Can Drive Bad Behavior” (2014)
• Beverly Hills Bar Association Speaker “Voir Dire 101: Winning From the Get-Go”
• Professor of “Pretrial Civil Procedure” at UCLA for Attorney Assistant Program (Certified Paralegal Course) (1989)

• Lawyer Limelight: Jim Rosen (Lawdragon Magazine – July 21, 2022)
• Getting Theirs (Forbes Magazine – May 6, 2006)
• Regular feature in the Daily Journal called “War Stories” (2017-2020)

• California State Bar
• American Board of Trial Advocates, 2008-Present
• Executive Board Member, American Board of Trial Advocates, Los Angeles Chapter, 2016-Present (President 2024)
• American Board of Trial Advocates, National Membership Co-Chair (2022-2024)
• Member of the Board of Directors for the American Board of Trial Advocates Foundation
• Editorial Board for Voir Dire magazine (2020-Present)
• Association of Professional Responsibility Lawyers (APRL)
• American Bar Association
• Los Angeles County Bar Association
• Beverly Hills Bar Association
• Santa Barbara County Bar Association
• Consumer Attorneys Association of California
• U.C.L.A. Alumni Association
• Phi Kappa Psi Alumni Association
• Diploma in Trial Advocacy Skills, National Institute of Trial Advocacy, 1990
• American Political Items Collectors

• All California State Courts
• United States District Court, Central District of California
• United States District Court, Northern District of California
• United States District Court, Southern District of California
• Ninth Circuit Court of Appeals
• United States Supreme Court

• Loyola Law School, Los Angeles (1985); Editor of the Loyola Entertainment Law Journal
• University of California, Los Angeles, Bachelor of Arts in American History (1979)