Okla. Stat. tit. 75, § 504

A. Prior to submitting proposed permanent rules for adoption, amendment, revision or revocation pursuant to the Administrative Procedures Act, the agency shall comply with the provisions of paragraph 4 of subsection A of Section 303 of this title in order to determine whether the proposed rules adversely affect small business. B. The Oklahoma Small Business Regulatory Flexibility Act shall not apply to proposed permanent rules by an agency to implement a statute or ordinance that does not require an agency to interpret or describe the requirements of the statute or ordinance, such as state legislative or federally mandated provisions which afford the agency no discretion to consider less restrictive alternatives.