Office of the Prime Minister (Canada) December 21, 2015, the new Prime Minister Justin Trudeau was still in the process of hiring staff. However, he announced some key positions as well as his office's directorates: The Office of the Prime Minister was a fairly weak and secondary group before Pierre Trudeau became prime minister in 1968, after whose appointment much of what had previously been the responsibility of the Privy Council Office was shifted to the PMO. After that point, the PMO became more central to the government, and many of Trudeau's economic and constitutional initiatives were launched with the aid and advice of its staff.
Prime Minister of Sri Lanka As per the constitution, if the office of president becomes vacant, the prime minister would "act in the office of President during the period between the occurrence of such vacancy and the assumption of office by the new President and shall appoint one of the other Ministers of the Cabinet to act in the office of Prime Minister". In such as situation, the office of Prime Minister is vacant or the prime minister is unable to act, the Speaker shall act in the office of President. The president may appoint the prime minister to exercise, perform and discharge the powers,