Ind. Code § 22-5-4-1
(a) Except as provided in subsection (b), an employer may not:
(2) discriminate against an employee with respect to:
(B) terms and conditions of employment;
based on the employee's use of;
tobacco products outside the course of the employee's or prospective employee's employment.
(b) An employer may implement financial incentives:
As added by P.L.175-1991, SEC.1. Amended by P.L.136-2006, SEC.1.