California Code, Code of Civil Procedure - CCP § 204

(a) No eligible person shall be exempt from service as a trial juror by reason of occupation, economic status, or any characteristic listed or defined in Section 11135 of the Government Code, or for any other reason.  No person shall be excused from service as a trial juror except as specified in subdivision (b).

(b) An eligible person may be excused from jury service only for undue hardship, upon themselves or upon the public, as defined by the Judicial Council.