The Supreme Court of the United States ruled on April 27, 2011, that state laws and court decisions that prohibit arbitration clauses from containing class action waivers are preempted by the Federal Arbitration Act, and that such clauses are not necessarily unconscionable.

The Supreme Court of the United States recently handed down a decision in AT&T Mobility LLC v. Concepcion, 562 U.S. ___ (2011), which will have a major impact on the enforceability of class action waivers in arbitration clauses. The court held that the Federal Arbitration Act (FAA) preempts state statutory and decisional authority that treats arbitral class action waivers as unconscionable, as a matter of law. The Supreme Court also specifically disapproved of a California Supreme Court decision that had held that class action waivers in consumer contracts were unconscionable, and thus unenforceable. The AT&T decision could provide a road map for companies desiring to avoid consumer class action claims.