Ohio Revised Code Title XLIX. Public Utilities § 4963.16

Any employee of a common carrier engaged in moving traffic on a railroad between points within this state, who is killed or injured by a locomotive, tender, car, similar vehicle, or train, in use contrary to sections 4963.14 and 4963.15 of the Revised Code, shall not be deemed to have assumed the risk thereby occasioned, although continuing in the employment of such carrier after the unlawful use of such locomotive, tender, car, similar vehicle, or train had been brought to his knowledge. Such employee shall not be held to have contributed to his injury in a case where the carrier violated such sections when such violation contributed to his death or injury.