The Civil Service Employees Association (CSEA) is one of the largest and most influential unions in New York and the United S ... tates. CSEA has about 300,000 members and represents state, county, municipal, school district, child care, and private sector employees. Formed in 1910, CSEA has improved the lives of hardworking New Yorkers for more than 100 years, and is the largest affiliate of the American Federation of State, County, and Municipal Employees (AFSCME). read more