Ohio Rev. Code Ann. § 109.575

At the time of a person's initial application to an organization or entity to be a volunteer in a position in which the person on a regular basis will have unsupervised access to a child, the organization or entity shall inform the person that, at any time, the person might be required to provide a set of impressions of the person's fingerprints and a criminal records check might be conducted with respect to the person. Not later than thirty days after the effective date of this section, each organization or entity shall notify each current volunteer who is in a position in which the person on a regular basis has unsupervised access to a child that, at any time, the volunteer might be required to provide a set of impressions of the volunteer's fingerprints and a criminal records check might be conducted with respect to the volunteer.