California Penal Code
The offices of adult probation officer, assistant adult probation officer, and deputy adult probation officer are hereby created. The probation officers, assistant probation officers, and deputy probation officers appointed in accordance with Chapter 2 (commencing with Section 200) of Division 2 of Part 1 of the Welfare and Institutions Code shall be ex officio adult probation officers, assistant adult probation officers, and deputy adult probation officers except in any county or city and county whose charter provides for the separate office of adult probation officer. When the separate office of adult probation officer has been established he or she shall perform all the duties of probation officers except for matters under the jurisdiction of the juvenile court. Any adult probation officer may accept appointment as member of the Board of Corrections and serve in that capacity in addition to his or her duties as adult probation officer and may receive the per diem allowance authorized in Section 6025.1.