Ohio Rev. Code Ann. § 4112.04
(A) The commission shall do all of the following:
(11) Notify a person who files a charge pursuant to section 4112.051 of the Revised Code that under division (A) of section 4112.052 of the Revised Code, the person is prohibited from bringing a civil action under this chapter unless one of the following applies:
(B) The commission may do any of the following:
(3) Hold hearings, subpoena witnesses, compel their attendance, administer oaths, take the testimony of any person under oath, require the production for examination of any books and papers relating to any matter under investigation or in question before the commission, and make rules as to the issuance of subpoenas by individual commissioners.
(4) Create local or statewide advisory agencies and conciliation councils to aid in effectuating the purposes of this chapter. The commission may itself, or it may empower these agencies and councils to, do either or both of the following: