(a) Any member may authorize another person or persons to act by proxy with respect to such membership except that this right may be limited or withdrawn by the articles or bylaws, subject to subdivision (f). Any proxy purported to be executed in accordance with the provisions of this part shall be presumptively valid.

(b) No proxy shall be valid after the expiration of 11 months from the date thereof unless otherwise provided in the proxy, except that the maximum term of any proxy shall be three years from the date of execution. Every proxy continues in full force and effect until revoked by the person executing it prior to the vote pursuant thereto, except as otherwise provided in this section. Such revocation may be effected by a writing delivered to the corporation stating that the proxy is revoked or by a subsequent proxy executed by the person executing the prior proxy and presented to the meeting, or as to any meeting by attendance at such meeting and voting in person by the person executing the proxy. The dates contained on the forms of proxy presumptively determine the order of execution, regardless of the postmark dates on the envelopes in which they are mailed.

(c) A proxy is not revoked by the death or incapacity of the maker or the termination of a membership as a result thereof unless, before the vote is counted, written notice of such death or incapacity is received by the corporation.

(d) Unless otherwise provided in the articles or bylaws, the proxy of a member which states that it is irrevocable is irrevocable for the period specified therein (notwithstanding subdivisions (b) and (c)) when it is held by any of the following or a nominee of any of the following:

(1) A person who has purchased or who has agreed to purchase the membership;

(2) A creditor or creditors of the corporation or the member who extended or continued credit to the corporation or the member in consideration of the proxy if the proxy states that it was given in consideration of such extension or continuation of credit and the name of the person extending or continuing the credit; or

(3) A person who has contracted to perform services as an employee of the corporation, if the proxy is required by the contract of employment and if the proxy states that it was given in consideration of such contract of employment, the name of the employee and the period of employment contracted for.

Notwithstanding the period of irrevocability specified, the proxy becomes revocable when the agreement to purchase is terminated; the debt of the corporation or the member is paid; or the period of employment provided for in the contract of employment has terminated. In addition to the foregoing paragraphs (1) through (3), a proxy of a member may be made irrevocable (notwithstanding subdivision (c)) if it is given to secure the performance of a duty or to protect a title, either legal or equitable, until the happening of events which, by its terms, discharge the obligations secured by it.

(e) A proxy may be revoked, notwithstanding a provision making it irrevocable, by a transferee of a membership without knowledge of the existence of the provision unless the existence of the proxy and its irrevocability appears on the certificate representing the membership.

(f) Subdivision (a) notwithstanding: (1) No amendment of the articles or bylaws repealing, restricting, creating or expanding proxy rights may be adopted without approval by the members (Section 5034); and (2) No amendment of the articles or bylaws restricting or limiting the use of proxies may affect the validity of a previously issued irrevocable proxy during the term of its irrevocability, so long as it complied with applicable provisions, if any, of the articles or bylaws at the time of its issuance, and is otherwise valid under this section.

(g) Anything to the contrary notwithstanding, any revocable proxy covering matters requiring a vote of the members pursuant to Section 7222; Section 7224; Section 7233; paragraph (1) of subdivision (f) of this section; Section 7812; paragraph (2) of subdivision (a) of Section 7911; Section 8012; subdivision (a) of Section 8015; Section 8610; or subdivision (a) of Section 8719 is not valid as to such matters unless it sets forth the general nature of the matter to be voted on.