Ohio Rev. Code § 3121.091: Service of notice of withholding support from payments due from the state to certain persons.

A withholding notice or other order issued pursuant to Chapter 3115., 3119., 3121., or 3123. of the Revised Code with respect to an obligor described in section 3121.09 of the Revised Code shall be served on one of the following:

(A) If the obligor is an officer or employee of the state, on the director of administrative services;

(B) If the obligor is an individual described in division (B) of section 3121.09 of the Revised Code, on the head of the state agency that is contracting with the obligor or that owes or will owe the obligor money.