Mississippi Code Title 11. Civil Practice and Procedure § 11-7-19

In all actions for personal injury to an employee, and in all actions where such injury results in death, such employee shall not be held to have assumed the risks of his employment in any case where such injury or death results in whole or in part from the negligence of the master. This rule shall not apply to conductors, or locomotive engineers, in charge of dangerous or unsafe cars or engines voluntarily operated by them.