The American Federation of Government Employees (AFGE) is the largest federal employee union representing 600,000 federal and D.C. government workers nationwide and overseas. Workers in virtually all functions of government at every federal agency depend upon AFGE for legal representation, legislative advocacy, technical expertise and informational services.

The union is headquartered in Washington , D.C. , and divided into 12 geographical districts consisting of some 1,100 Locals. Over one-half of AFGE's members are consolidated into agency-wide bargaining units. Agencies with the highest concentration of union membership include the Department of Defense, the Department of Veterans Affairs, the Social Security Administration and the Department of Justice.

Local 987, based in Warner Robins, Georgia and serving the Bargaining Unit Employees (BUEs) at Robins Air Force Base, has the largest organized membership in the Department of Defense.