This ruling by the Ninth Circuit is the most recent in a long line of decisions, both by federal circuit courts and the U.S. Supreme Court, deferring to the principle that parties’ freedom to enter into mandatory arbitration agreements is favored under the FAA. The Court reasoned that AB 51 “‘singles out arbitration provisions as an exception’ to generally applicable law,” and pointedly observed that “[i]f the parties agreed to resolve a matter by arbitration, ‘the FAA pre-empts state laws which “require a judicial forum for the resolution of those claims.”’” Ultimately, the Court concluded that AB 51 as a whole is preempted by the FAA.

The Court’s decision in Bonta follows the Supreme Court’s 2022 decision in Viking River Cruises v. Moriana, in which the Court struck a serious blow to California’s existing arbitration precedent and California’s Private Attorney General’s Act (“PAGA”) (see prior analysis here). Viking River Cruises held that a person’s individual PAGA claims were not excluded from arbitration under a valid, bilateral arbitration agreement, resulting in the person lacking standing to pursue non-individual, representative PAGA claims, and overturning California Supreme Court precedent from 2014 in Iskanian v. CLS Transportation. A portion of the Supreme Court in Viking River Cruises elaborated that new or modified legislation could provide standing for individuals to pursue non-individual PAGA claims where individual PAGA claims were addressed in a different forum like arbitration. While AB 51 was not targeting that particular PAGA issue, in Bonta, California’s resistance to arbitration agreements takes another hit as the Ninth Circuit rejects the state legislature’s attempts to prohibit arbitration agreements as a condition of employment.