Idaho Code § 67-2004: Regulation of per diem traveling expense allowances.

The state board of examiners is hereby authorized to adopt regulations fixing the daily, half-day and quarter-day allowances to be made to state officials and employees traveling on official business, within the lawful maximum daily subsistence allowance rate, and to require, by such regulations, such proofs in support of travel subsistence claims as may be deemed by it conducive to public economy.