A California Supreme Court ruling in a wage dispute threatens to undermine “millions of arbitration agreements” and more broadly highlights the state’s “recalcitrance” against allowing employers and their workers to resolve some workplace complaints out of court, lawyers for an auto dealer asserted in a new U.S. Supreme Court petition on Monday.

The petition, filed by a team from Paul, Weiss, Rifkind, Wharton & Garrison, said a series of California rulings against arbitration agreements have made the state a “serial offender” of U.S. Supreme Court decisions upholding mandates of the Federal Arbitration Act.