Assembly Bill 5 was the 2019 California state law that adopted the ABC test for worker classification. Assembly Bill 2257 was signed by Governor Newsom and went into effect on September 4, 2020, to clarify the earlier law. Both of these bills carved out numerous exemptions to the ABC test, allowing more workers to be classified as independent contractors in certain industries where it was customary, such as the music recording business in Los Angeles or in law firms.