Hla Tun was born on 19 February 1958, and he appointed assistant engineer for Ministry of Energy in 1991. he was promoted to assistant executive engineer and then executive engineer for Lawpita Hydropower Station and Pyinmana Township Electrical Engineer in 1991–2000. He served for Kalaw Substation, Inngone Substation and Pyinmana Substation for 2000–2009. He then served Shan (East) State as an Electrical Engineer, Naypyitaw District Electrical Engineer, Superintendent Engineer and Assistant Chief Engineer for Yangon Electricity Supply Board in 2009–2014. He was then promoted to deputy chief engineer for Mandalay Region Electrical Engineer, Naypyitaw Head office and Bago Region Electrical Engineer since 2014–2018. He has retired in 2018. He appointed Mon State Government (Minister of Electricity, Energy and Industry) on 7 May 2019. He is still serving for Mon State Government.[as of?]