Indiana Code §22-3-3-4 (a) provides: “If the employee is requested or required by the employer to submit to treatment outside the county of employment, the employer shall also pay the reasonable expense of travel, food, and lodging necessary during the travel, but not to exceed the amount paid at the time of the travel by the state to its employees under the state travel policies and procedures established by the department of administration and approved by the state budget agency. “