Two years after the Janus decision went into effect, which gave workers the right to choose whether or not they want to be a member of their workplace union, the four largest public sector unions have seen a decrease in membership numbers for a combined loss of 340,000 workers. These unions include the American Federation of State, County, and Municipal Employees (AFSCME), the American Federation of Teachers (AFT), the Service Employees International Union (SEIU), and the National Education Association.