On April 1, 2026, the Ninth Circuit handed California employers a meaningful win in O’Dell v. Aya Healthcare Services, Inc., No. 25-1528. The court reversed a Southern District of California ruling that had used a procedural doctrine—non-mutual offensive collateral estoppel—to invalidate arbitration agreements for more than 250 opt-in plaintiffs based on two prior arbitrator decisions

For most California employers, employee time and pay data has historically been treated as a legal obligation—something you keep because the law requires it, not because it creates value.

That mindset needs to change in 2026.

After years of defending employers in wage-and-hour class actions and PAGA cases, I have seen firsthand how employee data