Mr Samuel is Chairman of the Australian Competition & Consumer Commission. He took up this position in July 2003. Until then he was President of the National Competition Council, Chairman of the Melbourne & Olympic Parks Trust, a Commissioner of the Australian Football League, a member of the Board of the Docklands Authority, and a Director of Thakral Holdings Limited. He relinquished all these offices to assume his position with the ACCC.
Mr Samuel is also an Associate Member of the Australian Communications and Media Authority.
He is a past President of the Australian Chamber of Commerce and Industry, a past Chairman of Playbox Theatre Company and Opera Australia, a former Trustee of the Melbourne Cricket Ground Trust and former Chairman of the Inner & Eastern Health Care Network.
Until the early 1990s he pursued a professional career in law and investment banking, from which he retired to assume a number of roles in public service and company directorships.
Mr Samuel holds a Bachelor of Laws (Melbourne) and Master of Laws (Monash). In 1998 Mr Samuel was appointed an Officer in the General Division of the Order of Australia. In 2010 Mr Samuel was elevated to a Companion in the General Division of the Order of Australia.