Prime Minister of Australia prime minister, otherwise William McMahon63. Robert Menzies was the oldest person to ever be prime minister, leaving office at 71 years old. The longest-serving Prime Minister was Sir Robert Menzies, who served in office twice: from 26 April 1939 to 28 August 1941, and again from 19 December 1949 to 26 January 1966. In total Robert Menzies spent 18 years, 5 months and 12 days in office. He served under the United Australia Party and the Liberal Party respectively. The shortest-serving Prime Minister was Frank Forde, who was appointed to the position on 6 July 1945 after the death of
Prime Ministerial Task Group on Emissions Trading April 2007, the federal Labor Opposition and the Labor-controlled state and territory governments commissioned the separate Garnaut Climate Change Review. The Task Group members included: Prime Ministerial Task Group on Emissions Trading Prime Ministerial Task Group on Emissions Trading was a Task Group set up on 10 December 2006 by Australian Prime Minister John Howard to develop an Australian Carbon Trading Scheme. The terms of reference of the task group was: The Prime Ministerial Task Group submitted its final report on 31 May 2007. The scheme proposed by the Task Group had some similarities to the "hybrid scheme" developed by