Ohio Rev. Code Ann. § 3121.33

The withholding or deduction notices, other orders issued under sections 3121.03 and 3121.04 to 3121.06 of the Revised Code, administrative orders issued under section 3121.12 of the Revised Code, and the notices that require the obligor to notify the child support enforcement agency administering the support order of any change in the obligor's employment status or of any other change in the status of the obligor's assets, are final and enforceable by the court.