Okla. Stat. tit. 85A, § 85A-323

A. On an application and motion to the court by a party to an

arbitration proceeding, the Workers' Compensation Commission shall

vacate an award made in the arbitration proceeding if:

1. The award was procured by corruption, fraud, or other undue

means;

2. There was:

a. evident partiality by an arbitrator appointed as a

neutral arbitrator,

b. corruption by an arbitrator, or

c. misconduct by an arbitrator prejudicing the rights of

a party to the arbitration proceeding;

3. An arbitrator refused to postpone the hearing upon showing

of sufficient cause for postponement, refused to consider evidence

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material to the controversy, or otherwise conducted the hearing

contrary to Section 315 of this title, so as to prejudice

substantially the rights of a party to the arbitration proceeding;

4. An arbitrator exceeded his or her powers under this act;

5. The arbitration was conducted without proper notice of the

initiation of an arbitration as required in Section 309 of this

title so as to prejudice substantially the rights of a party to the

arbitration proceeding; or

6. It is determined that an arbitrator did not disclose a

conflict under Section 312 of this title.

B. An application and motion under this section shall be filed

within thirty (30) days after the movant receives notice of the

award or within thirty (30) days after the movant receives notice of

a modified or corrected award, unless the movant alleges that the

award was procured by corruption, fraud, or other undue means, in

which case the motion shall be made within ninety (90) days after

the ground is known or by the exercise of reasonable care would have

been known by the movant.

C. If the Commission vacates an award it may order a rehearing.

If the award is vacated on a ground stated in paragraph 1, 2 or 6 of

subsection A of this section, the rehearing shall be before a new

arbitrator. If the award is vacated on a ground stated in paragraph

3, 4 or 5 of subsection A of this section, the rehearing may be

before the arbitrator who made the award or the arbitrator's

successor. The arbitrator shall render the decision in the

rehearing within the same time as that provided in subsection B of

Section 319 of this title for an award.

D. If the Commission denies a motion to vacate an award, it

shall confirm the award unless a motion to modify or correct the

award is pending.