Mr. Hayashi graduated from the faculty of law at the University of Tokyo. He joined Mitsui & Co.,Ltd.in 1984.
He received his MA from the Kennedy School of Government at Harvard University.
He was elected to the House of Councillors for the first time in 1995,and has subsequently been reelected for four consecutive terms.
He served as Deputy Secretary-General for the Liberal Democratic Party (LDP) in the House of Councillors, Parliamentary Vice Minister for Finance, and Senior Vice Minister for the Cabinet Office.
He was appointed to the Cabinet as Minister of Defense in 2008, and then as Minister of State for Economic and Fiscal Policy in 2009.
And he stood as a candidate for the Presidency of the LDP in September 2012.
Mr. Hayashi is currently Minister of Agriculture, Forestry and Fisheries.