Ohio Revised Code Title XLI. Labor and Industry § 4123.741

No employee of any employer, as defined in division (B) of section 4123.01 of the Revised Code, shall be liable to respond in damages at common law or by statute for any injury or occupational disease, received or contracted by any other employee of such employer in the course of and arising out of the latter employee's employment, or for any death resulting from such injury or occupational disease, on the condition that such injury, occupational disease, or death is found to be compensable under sections 4123.01 to 4123.94, inclusive, of the Revised Code.