Okla. Stat. tit. 74, § 74-500.20: Governor, Lieutenant Governor and spouses -

Reimbursement for travel expenses.

The Governor of the State of Oklahoma is hereby authorized

reimbursement for all actual and necessary travel expenses incurred

when on official business of the state. Such actual and necessary

expenses shall include the subsistence and transportation expenses

of the Governor's spouse when accompanying the Governor on official

business of the state, or when attending an official function at the

request of the Governor. The provisions of this section shall also

apply to the Lieutenant Governor, the Lieutenant Governor's spouse,

and the Governor’s personal assistant.