A plaintiffs lawyer urged the California Supreme Court on Tuesday to apply its landmark worker-classification decision retroactively, a plea that comes amid broader state and national debates about gig economy workers.

Shannon Liss-Riordan of Lichten & Liss-Riordan argued that the court’s 2018 ruling in Dynamex Operations West v. Superior Court did not constitute a wholesale legal change in defining independent contractors and employees. Instead, Liss-Riordan said, the decision and its ABC test “tightened up” standards for classifying workers.