Haggerty previously served as Director of National Construction Agreements, a position he held since his appointment in 2006 by International President Newton Jones. He simultaneously held the designation of Special Assistant to the International President. Haggerty represented the Boilermakers in several labor-management agreements, including the NMA, and participated in processing grievances involving multi-trade jurisdictions, among other responsibilities. He is also a member of the NMAPC Board of Directors.
Haggerty entered the Boilermakers Apprenticeship Program in 1977, through Local Lodge 45 in Richmond, Va., graduating as a journeyman in 1980. He was elected president of Local 45 in 1984 and also served as an assistant business agent from 1984 through 1988. He was elected business manager/secretary-treasurer for the lodge in 1993. In 1998, he was appointed as a safety rep for MOST (Mobilization, Optimization, Stabilization, and Training), a position he held until his appointment as D-NCA in 2006.