Okla. Stat. tit. 14A, § 5-105
(1) For the purpose of this part
(2) The maximum part of the aggregate disposable earnings of an individual for any workweek which is subjected to garnishment to enforce payment of a judgment arising from a consumer credit sale, consumer lease, or consumer loan may not exceed the lesser of
(b) the amount by which his disposable earnings for that week exceed thirty times the federal minimum hourly wage prescribed by Section 6(a) (1) of the Fair Labor Standards Act of 1938, U.S.C. Title 29, Section 206 [29-206](a)
(1), in effect at the time the earnings are payable.
Laws 1969, HB 1001, c. 352, § 5-105, emerg. eff. July 1, 1969.