The Prime Minister of the Republic of Korea is appointed by the South Korean president with the National Assembly's approval. The Prime Minister of South Korea is not required to be a member of the National Assembly.
The Prime Minister is the principal executive assistant to the President who is the actual head of government. The Prime Minister takes the role of a Vice President. The Prime Minister assists the President by supervising ministries, make recommendations for minister, and is the vice chairman of the Cabinet. The Prime Minister is the first in the order of succession to discharge the duties of the office of the President as the acting-president should the president be unable to discharge her or his office.
The position was created on 31 July 1948, two weeks before the government of South Korea was founded, and was held by Lee Beom-seok until 1950. The title was Chief Cabinet Minister from 1961 until 1963. The Prime Minister's Office is supported by two vice ministers.
A prime minister that has been appointed by the president but not yet confirmed by the National Assembly is known as the acting Prime Minister. The Prime Minister becomes acting president if the president dies, resigns or is impeached.