While it may not last much longer than it takes the ink to dry on the opinion, the Court of Appeal (Second Appellate District, Division One), in Franco v. Arakenian Enterprises, Inc. (November 26, 2012) considered a significant question: "The question on appeal is whether Gentry was overruled by Stolt-Nielsen S.A. v. AnimalFeeds International Corp. (2010) 559 U.S. ___ [130 S.Ct. 1758] (Stolt-Nielsen) and AT&T Mobility LLC v. Concepcion (2011) 563 U.S. ___ [131 S.Ct. 1740] (Concepcion)."  Slip op., at 3.  Summarizing a 65-page opinion, the Court said:

We conclude that Gentry remains good law because, as required by Concepcion, it does not establish a categorical rule against class action waivers but, instead, sets forth several factors to be applied on a case-by-case basis to determine whether a class action waiver precludes employees from vindicating their statutory rights. And, as required by Stolt-Nielsen, when a class action waiver is unenforceable under Gentry, the plaintiff's claims must be adjudicated in court, where the plaintiff may file a putative class action. Accordingly, we affirm.

Slip op., at 3.

The decision follows an earlier opinion in the matter, Franco v. Athens Disposal Co., Inc., 171 Cal. App. 4th 1277 (2009) (Franco I).  That procedural and factual history is extensive, and I won't summarize it.  The opinion also contains a footnote indicating that it invited comment on D.R. Horton, but because Franco did not respond to the request, the Court declined to address the impact of that matter.

 The decision also has an exhaustive review of arbitration decisions in the context of statutory claims.  After that history, the Court examined the reach of the Concepcion.  An extended portion of the Court's analysis cited approvingly to a law review analysis: Gilles & Friedman, After Class: Aggregate Litigation in the Wake of AT&T Mobility v. Concepcion (2012) 79 U.Chi. L.Rev. 623.

Ultimately, after looking at the Question Presented in Concepcion, the Court concluded that, in this case, Franco lacked the means, not the incentive, to pursue his claims.  That distinction, the Court held, justified the trial court's decision to deny the petition to compel arbitration.

Then, tucked right into the end of the opinion, the Court offered a monumental observation that would have had great significance if the Court had considered D.R. Horton:

Which brings us to the subject of Concepcion's effect, if any, on PAGA claims. We have already concluded that Athens Services's arbitration agreement — the MAP — contains two unenforceable clauses: the class action waiver and the prohibition on acting as an attorney general. (See Franco I, supra, 171 Cal.App.4th at pp. 1297–1300, 1303; fn. 2, ante.) Those clauses operate independently of each other: One restricts Franco‘s pursuit of his rest and meal period claims while the other prohibits his recovery under the PAGA. Together, they render the MAP tainted with illegality, making it unenforceable and permitting Franco to adjudicate his claims in a judicial forum. (See Franco I, at p. 1303; fn. 2, ante.) Concepcion does not preclude a court from declaring an arbitration agreement unenforceable if the agreement is permeated by an unlawful purpose.

Slip op., at 64.  See that?!  Right there?!  This Court gets it!  If you impose a contract that violates the law (e.g., the NLRA), then the contract is unenforcable in Court on the general ground of illegality.  Any contract that violates the NLRA, not just arbitration agreements, is void and unenforceable.  How hard is this, really?  And here we finally see a Court clearly articulate the illegality defense analysis, but the Court declined to address the NLRA argument because one of the parties was too busy to answer.  Wonderful.

Of course, this case may vanish for years when it gets sucked up into the California Supreme Court's Gentry re-examination.