Cal. Corporations Code - CORP § 9340. Section 9340.
(a)
A member may resign from membership at any time.
(b)
This section shall not relieve the resigning member from any obligation for charges incurred, services or benefits actually rendered, dues, assessments or fees, or arising from contract or otherwise, and this section shall not diminish any right of the corporation to enforce any such obligation or obtain damages for its breach.
(c)
Except as provided in subdivision (b) of Section 9320 or in subdivision (a) of this section, a membership issued for a period of time shall expire when such period of time has elapsed unless the membership is renewed.
(d)
A membership may be terminated as provided in the articles or bylaws of the corporation.