Okla. Stat. tit. 20, § 20-1104B: Per diem and mileage

A. Any Justice of the Supreme Court, Judge of the Court of

Criminal Appeals, or Judge of the Court of Civil Appeals who is

retired pursuant to the Uniform Retirement System for Justices and

Judges, Section 1101 et seq. of this title, may apply to the Supreme

Court for senior status.

B. Any District Judge, Associate District Judge, or Judge of

the Workers' Compensation Court who is retired pursuant to the

Uniform Retirement System for Justices and Judges, Section 1101 et

seq. of this title, may apply to the Supreme Court for active duty

assignments.

C. The Supreme Court may assign duties to Senior Justices and

Judges and to Active Retired Judges. These duties may include, but

shall not be limited to, settlement efforts, consideration of

motions, consideration of special proceedings, administrative

duties, and research and writing of opinions. These duties may or

may not include courtroom participation.

D. It shall be the duty of the Supreme Court to annually

certify the status of Senior Justices and Judges and Active Retired

Judges.

E. The Supreme Court may make any appropriate order regarding

office space, necessary equipment, and support staff as appropriate

for Senior Justices and Judges and Active Retired Judges.

F. Any retired Justice or judge who is assigned and who

performs active duty after retirement shall receive not more than

Three Hundred Dollars ($300.00) per diem plus necessary expenses

which are reimbursable pursuant to the State Travel Reimbursement

Act as determined by the Supreme Court.