The California State University Employees Union (CSUEU)/SEIU 2579 is a labor union representing approximately 16,000 healthcare, operations, administrative and technical support staff at the California State University's 23 campuses and the Office of the Chancellor. CSUEU, representing Bargaining Units 2, 5, 7, 9, 13, and 15 is affiliated with the Service Employees International Union and the California State Employees Association.