International Union of Operating Engineers

About IUOE Local 77

Welcome to the official web page of local 77 of the International Union of Operating Engineers.  Local 77 is a labor union that represents skilled equipment operators in the construction industry.  Members of local 77 run every type of construction equipment that is in use in the construction industry today. 

The objects and purposes of this organization are to elevate the trade of the operating engineers to its proper position in all industrial activity and the ranks of organized workers, and to encourage a higher standard of skill among our members.  We work to cultivate feelings of friendship among the men and women of the craft and those who may employ its members and to organize all persons working in the jurisdiction.

The Local was founded in 1901 and in those days covered most of the mid-Atlantic area.  Local 77 now has 1650 members and covers Washington DC, eight counties in Northern Virginia and four counties in Maryland surrounding the District of Columbia. 

Local 77 maintains a 170 acre training center in Accoeek Maryland where we provide our members with the latest training, certifications and licensing training that are available.  Local 77 maintains a fleet of equipment at our training center where we encourage our members to maintain and gain additional skills.

Local 77 headquarters is located in Suitland, Maryland.  Browse through our web site and find out more about local 77.  If you have any question please give us a call at 301-899-6900.