As used in this subdivision "station officer" means an unarmed civilian employee who assists a peace officer in the processing of persons who have been arrested and who performs duties including, but not limited to, booking and fingerprinting and maintaining custody and control of persons who have been arrested.
As used in this subdivision, "employee" means a deputy sheriff, correctional officer, custodial officer, medical staff person or designated civilian employee whose duties may include, but are not limited to, maintaining custody and control of persons who have been arrested or sentenced, or both.
Ca. Pen. Code § 4021