A. Any person who retires or who has elected to receive a vested benefit under the provisions of the State of Oklahoma retirement systems or persons who are currently drawing disability benefits under Section 1331 et seq. of this title or who meet each and every requirement of the State Employees Disability Program or the spouse or dependent of any such employee may continue in force the life insurance benefits authorized by this act in a face amount of not less than one-fourth (1/4) of the basic life insurance amount, if such election to continue in force is made within thirty (30) days from the time of severance. Persons electing to continue in force life insurance benefits shall pay the full cost of the life insurance and under such terms and conditions as established by the Office of Management and Enterprise Services. Further, any such retiree may continue in force any additional life insurance that was purchased prior to retirement at an actuarially adjusted rate and under such terms and conditions as established by the Office. Effective January 1, 2002, nonvested employees may also continue their life insurance benefits as provided in this section following termination of employment, if the employee has completed at least eight (8) years of service with an employer participating in the Oklahoma Public Employees Retirement System or at least ten (10) years of service with an employer participating in the Teachers' Retirement System of Oklahoma. The election to continue the employee's life insurance in force must be made within thirty (30) days after the date of termination.