Yongyuth was high-rank public servant, served as Permanent Secretary of Ministry of Interior, director-general of the Department of Lands, chairman of the Metropolitan Electricity Authority and chairman of the Audit Committee of the Government Lottery Office.
On 9 September 2010, Yongyuth announced to resign from the post to clear place for Kowit Wattana,[2] but the voting party members asked him to carry on the leadership.
After his Pheu Thai Party won 2011 general election, he was appointed Deputy Prime Minister and Minister of Interior in the government of Yingluck Shinawatra on 9 August 2011 and resigned on 28 September 2012.
[3][4] He also resigned from MP and Pheu Thai Party's leader on 4 October 2012.
[5] Prior to resignations he was accused of illegal land sale[6] endorsements and later was found guilty by the National Anti-Corruption Commission of misfeasance.