Okla. Admin. Code § 690:5-9-6
Prior to the adoption, amendment, or repeal of a rule the Board shall afford an interested person a reasonable opportunity to submit data, views, and arguments, either oral or written, concerning such proposed action. If the rule under consideration is one which affects the substantive right of any person, the Board upon written request shall grant any person or association a reasonable opportunity to submit data, views, and arguments, either oral or written, concerning such proposed action. Oral argument on such rule shall also be granted when requested by a subdivision or an agency of government. If no substantive rights of the person, association, or governmental entity are affected by or involved in the rule to be considered, the Board may, at its discretion, refuse to hear oral argument and require such matters to be submitted in writing. The Board, in the exercise of its sound discretion shall determine whether the proposed action affects any such substantive rights.
Okla. Admin. Code § 690:5-9-6