Ohio Revised Code General Provisions § 9.233

(A) A recipient shall be entitled to the contract payment earned.  In no event shall a recipient be entitled to more than the contract payment earned.  A recipient shall repay any money received in excess of the contract payment earned to the governmental entity or, if a different disposition is provided for in the recipient's contract with the governmental entity, dispose of that money in accordance with the terms of the contract.

(B) In order to determine the contract payment earned, all financial books and records open to inspection pursuant to section 9.235 of the Revised Code shall be held to standards consistent with generally accepted accounting principles.