Minimum service retirement benefits are payable as follows:

1. (1) If a classified employee's average salary is less than $6,500, the retirement allowance shall be $10.83 per month for each year of service.
2. (2) If a nonclassified employee's average salary is less than $5,350, the retirement allowance shall be $8.91 per month for each year of service.

Amended at 10 Ok Reg 3879, eff 7-12-93