Ohio Rev. Code § 3121.033
If a court or child support enforcement agency is required to issue one or more notices or orders described in section 3121.03 of the Revised Code, the court or agency to the extent possible shall issue a sufficient number of the notices or orders to provide that the aggregate amount withheld or deducted under those notices or orders satisfies the amount ordered for support in the support order plus any arrearages owed by the obligor under any prior support order that pertained to the same child or spouse, notwithstanding the limitations of sections 2329.66, 2329.70, 2716.02, 2716.041, 2713.05, 2716.13, and 4123.67 of the Revised Code. However, in no case shall the aggregate amount withheld pursuant to a withholding notice described in section 3121.03 of the Revised Code and any fees withheld pursuant to the notice as a charge for services exceed the maximum amount permitted under section 303(b) of the "Consumer Credit Protection Act," 15 U.S.C. 1673(b).
R.C. § 3121.033