A new U.S. Supreme Court decision holding that individuals can waive the right to participate in a class action as part of an arbitration agreement has the potential to limit the availability of class action treatment for commercial and consumer disputes.

In AT&T Mobility LLC v. Concepcion, the Court relied on the "liberal federal policy favoring arbitration" to hold that the Federal Arbitration Act preempts California law that prevented enforcement of a contract clause waiving the right to participate in a class action. These clauses required any claims to be brought in an individual capacity rather than as a class action or in a class arbitration. California courts – and courts in several other jurisdictions – had held that such clauses are "unconscionable" and therefore unenforceable.

The Concepcion case was brought by a couple who alleged that AT&T Mobility had engaged in false advertising when it offered "free" cellular telephones but then charged sales tax of about $30 on the full retail price of the telephones. The couple wanted to proceed with a class action on the issue and had argued that the provision in their consumer contract limiting them to an individual claim was unenforceable under California law.

The Supreme Court disagreed, stressing that the "over-arching purpose" of the Federal Arbitration Act is to ensure enforcement of arbitration agreements according to their terms so as to "facilitate streamlined proceedings." And while arbitration of individual claims can provide reduced costs and increased speed of dispute resolution over court proceedings, the same does not hold true for arbitration of class claims, the Court held. As the Supreme Court reasoned, requiring class-wide arbitration when the parties' contract says otherwise "interferes with fundamental attributes of arbitration and thus creates a scheme inconsistent with the FAA."

The plaintiffs and those supporting their position, argued that allowing class waivers to be enforced would mean many consumer suits would never be brought, as consumers routinely sign arbitration agreements and the value of their claims often will not make individual litigation worthwhile. While the majority opinion recognized this policy concern (and the four-member dissent stressed it), the Court stated that it was compelled to apply the FAA as written, holding that "States cannot require a procedure that is inconsistent with the FAA, even if it is desirable for unrelated reasons."

While the full impact of the Concepcion decision will not be known until the lower courts have the opportunity to flesh out its contours, the Court's reasoning could extend to various other contracts and contexts. However, the case invites businesses of all sorts – and especially those providing goods and services to consumers – to consider including in their contracts an arbitration provision that includes a waiver of class action rights.

The Concepcion case divided the Supreme Court and has drawn considerable attention from the business community and the plaintiffs' bar. A large number of interest groups on both sides of the issue filed "friend of the Court" briefs to express their disparate points of view. That division is expected to continue as some legislators who disagreed with the decision have indicated they will address the issue of arbitration agreements by introducing legislation in Congress.

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