Ohio Rev. Code Ann. § 4111.03
(D) As used in this section:
(2) "Employer" means the state of Ohio, its instrumentalities, and its political subdivisions and their instrumentalities, any individual, partnership, association, corporation, business trust, or any person or group of persons, acting in the interest of an employer in relation to an employee, but does not include either of the following:
(3) "Employee" means any individual employed by an employer but does not include: