Coverage by the California Public Employees Retirement Systems (Cal-PERS). Benefits of Cal-PERS membership as a Butte County employee include:
- "Classic Members" - 2% at 55 program (for all classifications except safety)
- "Classic Members" - 2% at 50 program for Safety employees
- "Classic Members" - 3% at 50 program for Safety employees
- "New Members" - 2% at 62 program (for all classifications except safety)
- "New Members" - 2.7% at 57 program for Safety employees