Service Union, drivers challenge California Proposition 22, App-Based Drivers as Contractors and Labor Policies Initiative (2020) - Ballotpedia

Voters in California voted to overturn Assembly Bill 5 which protected workers in the "gig economy", assuring them overtime pay and workers compensation benefits.  But relying on $200 million in funding by Uber, Lyft, and Doordash the companies ran a huge campaign to overturn AB5 via a popular referendum.  But the new law as a citizen initiative is difficult to overturn.  - GWC

California Proposition 22, App-Based Drivers as Contractors and Labor Policies Initiative (2020) - Ballotpedia

On January 12, 2021, the Service Employees International Union (SEIU) and four app-based drivers sued the state government in the California Supreme Court, seeking to have Proposition 22 declared unconstitutional and unenforceable.[6]

Bob Schoonover, president of SEIU California, said, "Prop. 22 doesn't just fail our state rideshare drivers, it fails the basic test of following our state constitution. The law as written by Uber and Lyft denies drivers rights under the law in California and makes it nearly impossible for lawmakers to fix these problems." 

Kathy Fairbanks, a spokesperson for the campaign behind Proposition 22, cited a statement from an app-based driver, which said, "Meritless lawsuits that seek to undermine the clear democratic will of the people do not stand up to scrutiny in the courts."[