No contract entered into by the board of county commissioners, or order made by it, shall be valid unless it has been assented to at a regular or special session of the board, and entered in the minutes of its proceedings by the county auditor or the clerk of the board.
When contracts valid
Ohio Rev. Code Ann. § 305.25, under Chapter 305 | Board of County Commissioners - Generally.
Ohio Rev. Code Ann. § 305.25