Okla. Stat. tit. 40 § 2-505
Whenever any claim involves the application of the provisions of Section 2-410, the representative of the Commission first considering the claim shall, if so directed by the Commission, promptly transmit such claim and all filed objections thereto to an appeal tribunal which shall make a determination upon the issues involved under that section. Such appeal tribunal shall make the determination thereon after affording the claimant and each employer who filed an objection an opportunity for a hearing in accordance with the provisions of this section with respect to hearings and determinations of appeal tribunals. The parties shall be promptly notified of the determination, together with the reasons therefor. Such determination shall be the final decision on the claim, unless, within ten (10) days after the mailing of notice to a party's last-known address, appeal is filed with the Board of Review.
Okla. Stat. tit. 40, § 2-505