RoseAnn DeMoro, the executive director of National Nurses United and the California Nurses Association, retired Sunday after 32 years at the head of the labor union.
DeMoro confirmed her retirement on Twitter. Bonnie Castillo, a trained nurse who was associate executive director of National Nurses United, will replace her.
National Nurses United is the largest union of registered nurses in the U.S. with about 150,000 members across the country. It includes three unions: the California Nurses Association, United American Nurses and the Massachusetts Nurses Association. About 100,000 members of the union are based in California.
National Nurses United was established in 2009 under the leadership of DeMoro, who was already the leader of the California Nurses Association for over two decades.
DeMoro is a strong supporter of single-payer healthcare and the union has endorsed legislation in California that would adopt it.
DeMoro is also an advocate for education and research for nurses, and has established classes for members on various healthcare topics like the relationship between health and poverty and the impact of overworked or shortstaffed nurses on patient outcomes.
DeMoro has not announced her future plans. She wrote on Twitter that even though she's retiring, "I'm not going anywhere. The working class is taking back power and I'll be fighting right alongside you!"