Dr Martin Parkinson AC PSM served in Commonwealth Government leadership positions on all facets of economic, social, foreign, defence and national security policies for almost forty years. As the secretary of the Department of the Prime Minister and Cabinet between 2016 and 2019, Martin was Australia’s most senior public servant. He served as secretary to the Treasury between 2011 and 2014, and before that was secretary of Australia’s inaugural Department of Climate Change from 2007. During his tenure, Martin led our key public sector organisations through a period of considerable political uncertainty, serving under five different prime ministers.