Okla. Stat. tit. 40 § 2-905
An employer may modify a shared work plan created pursuant to this act to meet changed conditions if the modification conforms to the basic provisions of the shared work plan as approved by the Oklahoma Employment Security Commission. The employer must report the changes made to the shared work plan in writing to the Commission before implementing the changes. If the original shared work plan is substantially modified, the Commission shall reevaluate the shared work plan and may approve the modified shared work plan if it meets the requirements for approval under Section 5 of this act. The approval of a modified shared work plan does not affect the expiration date originally set for that shared work plan. If substantial modifications cause the shared work plan to fail to meet the requirements for approval, the Commission shall deny approval to the modifications as provided by subsection E of Section 4 of this act.
Okla. Stat. tit. 40, § 2-905