California Code, Insurance Code - INS § 11532.7

The articles of incorporation or the bylaws may provide that the directors may be divided into two or more classes whose terms of office shall expire at different times, but no term shall continue longer than six years.  In the absence of such provisions, each director, except members of the board of directors at the time the insurer is mutualized, shall be elected for a term of one year.  All directors shall hold office for the term for which they are elected and until their successors are elected and qualified.  A director may, but need not be a member or policyholder of the insurer of which he is acting as director.  Vacancies in the board of directors may be filled by a majority of the remaining directors, though less than a quorum, and each director so elected shall hold office until the next annual meeting.