Service Employees International Union

Service Employees International Union (SEIU) is a labor union representing 2 million workers in over 100 occupations in the United States, Canada, and Puerto Rico. SEIU is focused on organizing workers in three sectors: healthcare (over half of members work in the healthcare field), including hospital, home care and nursing home workers; public services (government employees, including law enforcement); and property services (including janitors, security guards and food service workers).

Source: Wikipedia — Service Employees International Union (CC BY-SA 4.0)