Okla. Stat. tit. 75, § 75-316: Disqualification of hearing examiner or agency member

A hearing examiner or agency member shall withdraw from any

individual proceeding in which he cannot accord a fair and impartial

hearing or consideration. Any party may request the

disqualification of a hearing examiner or agency member, on the

ground of his inability to give a fair and impartial hearing, by

filing an affidavit, promptly upon discovery of the alleged

disqualification, stating with particularity the grounds upon which

it is claimed that a fair and impartial hearing cannot be accorded.

The issue shall be determined promptly by the administrative head of

the agency, or, if it affects a member or members of the agency, by

the remaining members thereof, if a quorum. Upon the entry of an

order of disqualification affecting a hearing examiner, the agency

shall assign another in his stead or shall conduct the hearing

itself. Upon the disqualification of a member of an agency, the

agency shall proceed with the proceeding if a quorum remains. If a

quorum no longer exists, by virtue of the member's disqualification,

the Governor immediately shall appoint a member pro tempore to sit

in place of the disqualified member in that proceeding. In further

action, after the disqualification of a member of an agency, the

provisions of Section 311 of this title shall apply.