Okla. Stat. tit. 18, § 381.47

With respect to deposit accounts, an association may require such minimum advance notice of withdrawal as is specified by federal regulations or such longer advance notice period of not more than thirty (30) days as its bylaws may provide. The payment of withdrawals from deposit accounts, in the event an association does not have funds available to pay all withdrawals when due, shall be subject to such rules and procedures as may be prescribed by the State Banking Commissioner, but any association which, except as authorized in writing by the Commissioner, fails to make full payment of any withdrawal when due shall be deemed to be in an unsafe or unsound condition to transact business within the meaning of Section 381.74 of this title.