Ohio Rev. Code § 119.13
At any hearing conducted under sections 119.01 to 119.13 of the Revised Code, a party or an affected person may be represented by an attorney or by such other representative as is lawfully permitted to practice before the agency in question, but, except for hearings held before the state personnel board of review under section 124.03 of the Revised Code, only an attorney at law may represent a party or an affected person at a hearing at which a record is taken which may be the basis of an appeal to court.
At any hearing conducted under sections 119.01 to 119.13 of the Revised Code, a witness, if he so requests, shall be permitted to be accompanied, represented, and advised by an attorney, whose participation in the hearing shall be limited to the protection of the rights of the witness, and who may not examine or cross-examine witnesses, and the witness shall be advised of his right to counsel before he is interrogated.
R.C. § 119.13