Ministers assist the President in the exercise of the executive power.

He has served the portfolios of Training from 2001-2003 and as the Minister assisting in public sector management from 2003-2005.

Minister assisting the Treasurer (25 August 1978 to 8 December 1979).

He was also the Minister assisting the Treasurer.

Minister assisting the Treasurer (to 15 February 1988).

Minister assisting the Prime Minister (to 7 May 1982).

Minister assisting the Prime Minister (to 25 May 1971).

Minister assisting the Prime Minister (from 24 May 1977).

Minister assisting the Prime Minister (from 2 September 1988).

Minister assisting the Minister for Foreign Affairs (to 6 November 1973).