Okla. Stat. tit. 74, § 74-500.8: Method of computing per diem

A per diem in an amount authorized by the federal Government

Services Administration (GSA) in its Federal Travel Regulation (FTR)

42 C.F.R. Section 300-1.1 et seq. and as updated in its FTR

Bulletins is authorized while in travel status. In computing per

diem reimbursement a day shall be a calendar day. The first and

last days of travel shall be paid at a rate of seventy-five percent

(75%) of the full-day per diem. Provided, however, that no per diem

shall be made for periods which do not include overnight status. If

meals and lodging at a meeting, workshop, conference or other object

of travel are furnished as a "package plan", reimbursement may be

made, based upon a receipt, but at a daily rate of not to exceed the

total daily rate provided in this act.