The composition of the Insurance Advisory Committee is made up of the following in accordance with MGL Chapter 32B, Section 3:
- Non-union member - (Town employee)
- Retiree representative
- American Federation of State, County & Municipal Employees (AFSCME) - (School custodial, maintenance & groundskeeping union)
- Communication Workers of America (CWA) - (Town non-management union)
- Westford Education Association (WEA) Unit A - (School teachers union)
- Westford Education Association (WEA) Unit B - (School nurses union)
- Westford Public Works Association (WPWA) - (Town highway department)
- Westford Superior Officers Association (WSOA) - (Police - Town Superior Officers Union)