William Cahill

William R. Cahill, Jr., Esq.
Business Agent

A.S. Criminology, North Shore Community College

B.S. Political Science, Suffolk University

M.A. Criminal Justice, Anna Maria College

J.D., Suffolk University Law School

Member of the New Hampshire, Massachusetts, and Vermont Bars


In 1979, Bill learned the importance of a coordinated effort when attempting to organize an employer after earning his CDL Class A license and working for a freight company in Wakefield, Massachusetts.

After graduating from Suffolk University, Bill worked as a correctional officer at M.C.I. Concord  for 18 months prior to being appointed to the Metropolitan Police Department and graduating with the 39th Recruit Training Class. The Metropolitan Police were Teamsters Local 55. As a ‘Met,’ Bill’s assignments included patrol, Academy Instructor, Firearms Director and Coordinator, and Principal Officer of Local 55. He received the Superintendent’s Award in recognition of the study he completed on the efficacy of the department transitioning to semi-automatic side-arms which resulted in the department transitioning to the Glock weapon’s system. He also proudly assisted with security at the 1991 Teamsters International Convention held at Walt Disney World. As Principal Officer of Local 55, with the assistance of Joint Council 10, he was instrumental in the successful merger of the Metropolitan Police and the Mass State Police.

In 1992, Bill became a member of the Mass State Police, where his assignments included the Special Office of Investigations, Patrol out of Foxboro Barracks, and Logan International Airport after September 11, 2001. After graduating Suffolk University Law School in 1996, Bill took and passed the Mass Bar Exam in 1996 and the NH Bar Exam in 1997. After passing the NH Bar, Bill represented  Local 633 and its members in numerous litigations, and eventually was asked to become the Public Sector Consultant for Local 633 by Principal Officer Dave Laughton. Bill became a Business Agent in 2019 and was elected in November 2021 for another term.

Bill currently represents public sector and private sector groups in Local 633, which include Law Enforcement (Police, Deputy Sheriffs, Department of Corrections); United Parcel Service; School Administrators; Court legal assistants; Town Employees; and 911 dispatchers. Bill has represented Local 633 before the NH Supreme Court, Federal District Court of NH, NH Superior Court, the NH Human Rights Commission, the EEOC, the NLRB, the Public Employee Labor Relations’ Board, and the NH Personnel Appeals Board.


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