Jack J. Slaughter is a Vice-Chair of the Ontario Labour Relations Board. Prior to joining the Board, he had extensive experience in the construction industry as General Counsel for the International Union of Operating Engineers, Local 793 from May 1985 to March 1995 and General Counsel for the Central Ontario Regional Council of Carpenters, Drywall and Allied Workers from August 1995 to February 2002. In 1995, he was Legal Counsel to the Railway Commissions under Mr. Justice George Adams, a Mediation-Arbitration Commission established by Parliament to resolve 13 collective agreements amongst CN, CP and the various railway unions.

Mr. Slaughter is a graduate of Osgoode Hall Law School, where he received the Ivan C. Rand Award in Constitutional Law, and the University of Toronto where he graduated with High Distinction with a Major in Economics.