Okla. Stat. tit. 56 § 169
All assistance grants made under this act shall be reinvestigated by the Department as frequently as may be required by the Commission. In all cases, the Department shall have the power to modify or revoke its former grant. The same right of hearing shall be accorded an aggrieved recipient as provided in Section 8 thereof. Provided, that on and after June 1st, 1957, it shall be the duty of the Oklahoma Public Welfare Commission in conformity with the Federal Social Security Laws and in regard to funds available to revise and liberalize the budget as now used in ascertaining the need of any person eligible to receive old age assistance, and in so doing the increased cost of living and condition of health shall be given due consideration (and excepting earned and/or inconsequential resources and casual irregular or unpredictable wages or salary in an amount of an average of $50.00 or a greater amount per month). Provided further, that the Commission shall immediately direct the reinvestigation and revision of the budget of each and every recipient and the payment of assistance thereafter shall be made on such basis.
Okla. Stat. tit. 56, § 169