Ind. Code § 22-3-7-21
(b) No compensation is allowed for any disease or death knowingly self-inflicted by the employee, or due to his intoxication, his commission of an offense, his knowing failure to use a safety appliance, his knowing failure to obey a reasonable written or printed rule of the employer which has been posted in a conspicuous position in the place of work, or his knowing failure to perform any statutory duty. The burden of proof is on the defendant.
Formerly: Acts 1937, c.69, s.14. As amended by Acts 1978, P.L.2, SEC.2212.