No retail establishment or an employee of a retail establishment shall be liable in any civil action for an injury or death of a customer resulting from any act or omission in allowing a customer to use an employee toilet facility pursuant to section 4173.02 of the Revised Code if the act or omission is not willful or grossly negligent.
Immunity regarding customer use of employee restrooms
Ohio Rev. Code Ann. § 4173.03, under Chapter 4173 | Retail Establishment Restrooms.
Ohio Rev. Code Ann. § 4173.03