Since the U.S. Supreme Court handed down its decision in AT&T Mobility, LLC v. Concepcion, holding that the Federal Arbitration Act preempts California's rule that invalidates arbitration agreements in which the parties waive the right to class-wide proceedings, courts in California have wrestled with applying Concepcion in the employment context, with confusing and often conflicting results for employers. It's not too surprising, then, that the California Supreme Court granted review last...