UHW was created by the merger of two SEIU local unions: Local 250 in Northern California and Local 399 in Southern California. The larger of those two locals, Local 250, began when workers at San Francisco General Hospital, who were inspired by the 1934 general strike in San Francisco, organized a union at their hospital in 1934 as the Hospital and Institutional Workers Union #19818, later affiliating with the Building Service Employees International Union, becoming BSEIU Local 250. After affiliation, they won a groundbreaking first contract with the San Francisco Hospital Conference, covering 11 hospitals. BSEIU Local 399 emerged in 1949, when several Southern California local unions consolidated under the leadership of BSEIU's Charles "Pop" Hardy who had a vision of joining small unions together to build strength. It then successfully negotiated a contract with the first Kaiser Permanente hospital, in Los Angeles, the following year. In 1958, both BSEIU Local 250 and Local 399 joined together in leading the BSEIU effort to defeat Prop. 18, a right-to-work initiative. After BSEIU changed its name to SEIU in 1968, the two locals partnered again in 1974 to successfully lobby Congress to change federal law, allowing non-profit hospitals to organize. The two merged to form SEIU-United Healthcare Workers West in 2004. On January 27, 2009, SEIU placed UHW West under trusteeship and dismissed 70 of the local's executives, including president Sal Rosselli. Rosselli and other ousted leaders reformed under the National Union of Healthcare Workers and pushed for UHW West members at 60 facilities to vote to decertify SEIU. In the series of elections that have taken place so far to determine whether or not current SEIU-UHW members want to stay in their union or join rival NUHW, more than 73,000 have chosen to stay in the local. On June 23, 2010 SEIU-UHW members at Kaiser Permanente ratified a contract covering 46,000 California workers guaranteeing a 3% annual wage increases. Other recent victories of the union include winning a six-week strike against Sutter Health in San Francisco; the conclusion of successful negotiations with Catholic Healthcare West; organizing victories at O'Connor Woods Retirement Community in Stockton, California, St. Vincent Medical Center in Los Angeles, Parkview Community Hospital in Riverside, California, and of IT workers at Kaiser; and a statewide contract victory with HCA, the nation's largest hospital company. Most of the union's current organizing work is being carried out in Southern California. On March 26, 2020, amid concerns about a shortage of protective equipment for healthcare workers during the coronavirus pandemic, SEIU-UHW announced it had secured a stockpile of 39 million N95 masks, for purchase by various hospital systems and government agencies. Hospitals that did not place orders became the target of SEIU petitions accusing them of "putting bottom line profits over safety." On April 11, it was revealed that SEIU-UHW and other middlemen had been the victims of a scam and that the stockpile did not exist. The scheme was uncovered by FBI agents during attempts to seize the shipment for FEMA under the Defense Production Act.
