Ohio Revised Code Title XIX. Courts Municipal Mayor's County § 1901.123

(B) The treasurer of a county that, pursuant to division (A)(1) or (3) of this section, is required to pay the per diem compensation to which an acting judge or assigned judge is entitled, shall submit to the administrative director of the supreme court quarterly requests for reimbursements of the state portion of the per diem amounts so paid. The requests shall include verifications of the payment of those amounts and an affidavit from the acting judge or assigned judge stating the days and hours worked. The administrative director shall cause reimbursements of the state portion of the per diem amounts paid to be issued to the county if the administrative director verifies that those amounts were, in fact, so paid.

(C) If the supreme court, pursuant to division (A)(4) of this section, is required to pay the per diem compensation to which an assigned judge is entitled, annually, on the first day of August, the administrative director of the supreme court shall issue a billing to the county treasurer of any county to which such a judge was assigned to a municipal court for reimbursement of the county or local portion of the per diem compensation previously paid by the supreme court for the twelve-month period preceding the last day of June. The county or local portion of the per diem compensation shall be that part of each per diem paid by the state which is proportional to the county or local shares of the total compensation of a resident judge of such court. The county treasurer shall forward the payment within thirty days. After forwarding the payment, the county treasurer shall seek reimbursement from the applicable local municipalities as appropriate.