It's fairly shocking that the defendant thought there was even the slimmest possibility of success in this appeal.
Plaintiffs file an employment lawsuit, defendant files a motion to compel arbitration, and plaintiffs respond by dismissing all of their individual claims and retaining only the PAGA claim -- and PAGA claims (as you know) aren't subject to mandatory arbitration. Sound strategy. (Though plaintiffs should have figured out this strategy from the outset, honestly, and avoided the waste of time and money by only filing the PAGA claims to begin with.)
Defendant nonetheless insists that the claims must be arbitrated because dismissing the claims subject to arbitration allegedly "doesn't work" because they might, at some point, be brought in the future. Hence, defendant insists, it's still entitled to a stay of the pending lawsuit -- a lawsuit that (again) isn't subject to arbitration.
The trial court disagrees. Defendant appeals. The Court of Appeal affirms.
Of course it does. Since that's obviously -- and, I want to reiterate, obviously -- correct.
Zero chance defendant prevails. Zero.
Two possibilities. One, defendant and its counsel were just irrational, and thought they could win an absurd argument on appeal. Possible. Second, defendant and its counsel knew they'd lose, but hey, you still delay the lawsuit for a year or two while you take the appeal of the denial of the motion to compel arbitration.
Exceedingly possible as well, eh?