Indiana Code Title 8. Utilities and Transportation § 8-1-2-118

Sec. 118. The members of said commission, its secretary and clerk, and such other persons as it may appoint or employ, as provided in this chapter, shall be entitled to receive from the state their actual necessary traveling expenses, which shall include the cost of transportation, hotel, telegraph, and telephone bills while traveling on the business of the commission, which amount shall be paid by the treasurer of state, on warrant of the state comptroller, upon an itemized statement thereof, sworn to by the party who incurred such expense in traveling, and after the same shall have been approved by the commission.