Ohio Rev. Code Ann. § 9.492
(A) The state shall not enter into a contingency fee contract with a private attorney unless the attorney general or the attorney general's designee makes a written determination prior to entering into that contract or within a reasonable time after entering into the contract that private representation is both cost-effective and in the public interest. Any written determination shall include findings for each of the following factors:
(C)
(1) Except as otherwise provided in division (C)(2) of this section and subject to divisions (C)(3) and (4) of this section, the state shall not enter into a contingency fee contract with a private attorney that provides for the private attorney to receive an aggregate contingency fee in excess of the total of the following amounts:
(E)
(1) A contract entered into between the state and a private attorney under this section shall include all of the following provisions that apply throughout the term of the contract and any extensions of that term: