Born on May 27, 1961.Hon. Osei-Mensah hails from Jachie in the Ashanti Region and married with five children. He holds Msc(University of Nat. & World Econs, Sofia, Bulgaria), 1991. He is an Economist/Banker. Hon. Osei-Mensah was the Operations Manager of Kuapa Kokoo Credit Union before he became an MP. He is a christian(Catholic).
He obtained 25,988 votes out of the 37,194 valid votes cast =69.9% in the last elections and represents the New Patriotic party and a member of the minority in parliament.