Joseph Benedict Chifley was an Australian politician and train driver who served as the 16th prime minister of Australia from 1945 to 1949. He held office as the leader of the Australian Labor Party (ALP), having previously served as the treasurer of Australia under Prime Minister John Curtin and later himself from 1941 to 1949. He was notable for defining Australia's post-war reconstruction efforts.

The Australian Labor Party (ALP), also commonly known as the Labor Party or simply Labor, is the major centre-left political party in Australia and one of two major parties in Australian politics, along with the centre-right Liberal Party of Australia. The party has been in government since being elected at the 2022 federal election, and with political branches in each state and territory, they currently form government in New South Wales, Queensland, South Australia, Victoria, Western Australia, the Australian Capital Territory, and the Northern Territory. As of 2023, Tasmania is the only state or territory where Labor forms the opposition. It is the oldest continuous political party in Australian history, being established on 8 May 1901 at Parliament House, Melbourne, the meeting place of the first federal Parliament.