Okla. Admin. Code § 715:10-17-2
A retired member is not eligible to be employed by the public schools of Oklahoma, in any capacity, for sixty (60) calendar days between the retiree's last day of preretirement public-education employment and any postretirement public-education employment. For purposes of this section, the term "last day of preretirement employment" shall mean the last day the employee is required to be physically present on the job to complete the terms of the employment contract or agreement. An employee on paid leave is still considered to be employed for purposes of this section. Employment under any conditions during this time including volunteer services shall cause the forfeiture of all retirement benefits received during the period. A retiree is ineligible to return to work post-retirement until after their retirement date.
Okla. Admin. Code § 715:10-17-2