Ohio Rev. Code Ann. § 4167.01
As used in this chapter:
(A) "Public employer" means any of the following:
(B) "Public employee" means any individual who engages to furnish services subject to the direction and control of a public employer, including those individuals working for a private employer who has contracted with a public employer and over whom the national labor relations board has declined jurisdiction. "Public employee" does not mean any of the following:
(F) "Undue hardship" means any requirement imposed under this chapter or a rule or order issued thereunder that would require a public employer to take an action with significant difficulty or expense when considered in light of all of the following factors: