SEIU Local 73 represents more than 25,000 public service workers in Illinois and Indiana. It offers membership options for state government workers, park districts, public school employees and universities. The organization provides assistance to employees on matters related to workers compensation laws. SEIU Local 73 maintains an online store that offers a variety of clothes for men, women and children. It is a part of Service Employees International Union, which is one of the largest health care and property services unions in the United States. Service Employees International Union, also known as SEIU, maintains over 300 local union affiliates throughout the U.S.