Julie Ann Su (Chinese: 蘇維思; born February 19, 1969) is an American attorney and government official who has served as Deputy Mayor of New York City for Economic Justice since March 2026. A member of the Democratic Party, Su acted as U.S. secretary of labor from 2023 to 2025, while she was the deputy secretary of labor from 2021 to 2025. She previously served as the California secretary of labor from 2019 to 2021 and California labor commissioner from 2011 to 2018.
Su began her career as a lawyer, notably serving as the lead attorney for the El Monte Thai garment slavery case in 1995. She was appointed as the California labor commissioner by Governor Jerry Brown in 2011, overseeing California's Division of Labor Standards Enforcement, before becoming the state's secretary of labor in 2019 under Governor Gavin Newsom. Su was nominated to serve as the U.S. deputy secretary of labor by President Joe Biden and was sworn in as the 37th deputy secretary on July 17, 2021, following Senate confirmation. Following the resignation of Secretary Marty Walsh, Su became acting secretary on March 11, 2023, and was nominated by President Biden to fill the position permanently. Su's confirmation stalled in the Senate, however, she was retained in an acting capacity for the duration of the Biden administration. The GAO responded to a challenge to her serving as acting secretary beyond the 210 day limit as set by the FVRA, and found it lawful because a succession statute specific to the department allows a deputy secretary of labor to serve as acting secretary until a successor is confirmed. Following the election of Zohran Mamdani as mayor of New York City, Su was selected to fill the newly created position of deputy mayor for economic justice, taking office on January 1, 2026.