SEIU Local 521

Service Employees International Union Local 521

Location: San Jose, CA

Number of members: 57,000

Client since: 2009

Website: http://www.seiu521.org

SEIU Local 521 is definitely growing. Most of their members are public sector employees who work for the city and counties. A small percentage, about 10 to 15%, are from the private sector: humane society, healthcare unit, and mental health.