He served in the government from 1975 to 1984 and was Cameroon's Ambassador to Canada from 1984 to 2004.
He is the longest-serving Prime Minister in Cameroonian history.
Yang was born in Jikejem-Oku, in Oku Sub Division located in the Bui Division of the Northwest Region of Cameroon.
After studying law at the University of Yaoundé, he became a prosecutor at the Court of Appeal in Buea in January 1975.
He was appointed to the government as Deputy Minister of Territorial Administration on June 30, 1975, and promoted to the post of Minister of Mines and Energy on November 8, 1979.
1984
He remained in the latter position for more than four years before being dismissed from the government on February 4, 1984.
He then became Ambassador to Canada on 23 October 1984, remaining in that post for 20 years; his title changed to High Commissioner when Cameroon joined the Commonwealth of Nations in 1995.
He also served as the Dean of the Diplomatic Corps in Canada for about 10 years.
Yang's time in Ottawa was dedicated to securing more foreign aid for his country, despite Canadian concerns about human rights abuses and corruption.
2000
Along with other representatives of African countries, he was pleased by Canada's commitment to debt relief in 2000.
Yang lived in Ottawa's Grenfell Glen neighborhood during his long stint as High Commissioner.
He headed Cameroon's delegation to the negotiations on the Cartagena Protocol on Biosafety from February 1998 to January 2000, and after the Protocol was adopted on January 29, 2000, he became chairman of the Intergovernmental Committee for the Cartagena Protocol (ICCP).
2004
Previously he was Assistant Secretary General of the Presidency, with the rank of minister, from 2004 to 2009.
He remained High Commissioner to Canada until he was appointed as Assistant Secretary-General of the Presidency of Cameroon on December 8, 2004.
He left Ottawa on December 17 and was installed as Assistant Secretary-General of the Presidency on December 21.
Yang's appointment marked the largest government shakeup since his predecessor was named Prime Minister in December 2004.
Biya stated on state radio that three ministers from the previous government had switched places, six new names were added while six portfolios were cut entirely.
The opposition said that it did not expect a great deal of change due in part to the continuance of a large government.
They had been hoping for a cut to thirty ministers; the real number remains in the sixties.
The reshuffle was believed to have been spurred on by public anger over rising food prices and the discontent with the high level of government corruption.
2008
Later, Yang was appointed as chairman of the board of directors of the Cameroon Airlines Corporation in late December 2008.
2009
Philémon Yunji Yang (born June 14, 1947 ) is a Cameroonian politician who served as Prime minister from 30 June 2009 to 4 January 2019.
President Paul Biya appointed Yang as Prime Minister on June 30, 2009, replacing another anglophone, Ephraïm Inoni.
2011
Adding to this, the move was seen as an attempt by Biya to shore up support for the next presidential election in 2011.
In addition to Yang, new ministers were appointed for defence, posts and telecommunications, communication, education, promotion of women, water and energy, and sports.
In March 2024, Philémon Yang is designated Africa's candidate for the presidency of the 79th session of the United Nations General Assembly.
