Predictably, after the Supreme Court expanded the preemptive effect of the Federal Arbitration Act in its 2011 Concepcion decision, employers took advantage, reports the Wall St. Journal: "Arbitration clauses with class-action waivers r[o]se sharply after 2011 court ruling."
Apologies for the subscriber-only link, but if you have access, it's worth a read, here.
