Warren's proposal (denoted AB 800 in the state Assembly and SB 500 in the Senate) was to be financed by a 3 percent payroll tax. Half the tax (1 .5 percent) was to paid by employers and the other half was to be paid by employees. Employees and their dependents would be covered. A new state authority would be created to administer the program. It would be run by a ten-member board with the director of public health as an ex-officio participant. On the board would be three employer representatives (with one farmer), two from organized labor (presumably AFL and CIO representatives), one from government employees, three doctors, and a dentist. Insurance coverage would be extended to wage earners with annual pay between $300 and $4,000. Routine doctor visits would be included as would a variety of related services such as hospitalization and X-rays. Doctors could join or not join the plan; there would be no compulsory membership on the supply side. Those physicians that did join would- as noted above- be paid on a fee- for-service basis.
https://www.jstor.org/stable/41172162?seq=1#page_scan_tab_contents
Warren's plan was defeated following pushback from industry and some reticence from organised labour but what if it succeeded?
Would California have started a trend similar to Canada of state-based single-payer approaches giving rise to a nation-wide program? Would the Republicans become the party of single-payer healthcare?