In 1970, he was appointed deputy minister of Energy, Mines and Resources and was part of the first Canadian trade mission sent to the People's Republic of China. He also played a key role in the establishment of Petro-Canada and Expo 86 in Vancouver.[2]
In 1974, Prime Minister Pierre Trudeau appointed Austin to be his chief of staff. In 1975, on Trudeau's recommendation, Governor GeneralJules Léger appointed him to the Senate. During Pierre Trudeau's final mandate as prime minister, Austin served as a Minister of State in the cabinet from 1981 to 1982 and then Minister of State for Social Development until Trudeau's retirement in 1984. He returned to the Cabinet of Canada in 2003 when Prime Minister Paul Martin appointed him Leader of the Government in the Senate, in which capacity he served until the Liberal defeat in the 2006 election. He took mandatory retirement from the Senate on March 2, 2007, his seventy-fifth birthday.
^ abcdKelly Korbin, "A lifetime in the public eye: Retiring senator shares high points; his hopes for Canada", Jewish Independent Online, February 10, 2007 "Welcome to the Jewish Independent Online". Archived from the original on 2007-09-28. Retrieved 2007-04-04.