Ohio Rev. Code § 3123.19
If child support arrearages are owed by an obligor to the obligee and to the department of job and family services, any payments received on the arrearages by the office of child support shall be paid in accordance with Title IV-D of the "Social Security Act," 88 Stat. 2351, 42 U.S.C. 651 et seq., as amended, and rules adopted by the director of job and family services.
If an obligor is in default under a support order and has a claim against another person of more than one thousand dollars, the obligor shall notify the child support enforcement agency of the claim, the nature of the claim, and the name of the person against whom the claim exists. If an obligor is in default under a support order and has a claim against another person or is a party in an action for any judgment, the child support enforcement agency or the agency's attorney, on behalf of the obligor, immediately shall file with the court in which the action is pending a motion to intervene in the action or a creditor's bill. The motion to intervene shall be prepared and filed pursuant to Civil Rules 5 and 24(A) and (C).
Nothing in this division shall preclude an obligee from filing a motion to intervene in any action or a creditor's bill.
R.C. § 3123.19