Ohio Rev. Code Ann. § 4113.71
(A) As used in this section:
(B) An employer who is requested by an employee or a prospective employer of an employee to disclose to a prospective employer of that employee information pertaining to the job performance of that employee for the employer and who discloses the requested information to the prospective employer is not liable in damages in a civil action to that employee, the prospective employer, or any other person for any harm sustained as a proximate result of making the disclosure or of any information disclosed, unless the plaintiff in a civil action establishes, either or both of the following:
(D)