No contract of employment, insurance, relief benefit or indemnity for injury or death entered into by or on behalf of any employee, nor the acceptance of any such insurance, relief benefit or indemnity by the person entitled thereto shall constitute any bar or defense to any action brought to recover damages for personal injuries to or death of such employee, but, upon the trial of such action against any employer, the defendant may set off therein any sum he has contributed toward any such insurance, relief benefit, or indemnity that may have been paid to the injured employee or, in case of death, to his personal representative.
Ala. Code § 25-6-4 (1975)