(1)    Generally.

      (a)    Unless the articles or bylaws provide otherwise, any action required or permitted by this chapter to be authorized at a members’ meeting may be authorized without a meeting if that action is authorized by all members and is evidenced by one or more written statements, signed by each member, describing and consenting to the action. Such an action has the same effect as an action authorized by unanimous vote at a members’ meeting at which all members are present and may be described as such in any document.

      (b)    The articles or bylaws may allow the members to authorize any other action on behalf of the cooperative, other than an action requiring board approval, without a members’ meeting, if the action is authorized by the number of members that would be required to approve the action at a members’ meeting at which all members were present and if the action is evidenced by one or more written statements, signed by each authorizing member, describing and consenting to the action. Such an action has the same effect as an action authorized by vote of the number of authorizing members at a meeting at which all members are present and may be described as such in any document.

   (2)   Effective date. Any action authorized under sub. (1) is effective when the last member necessary for authorization signs the statement evidencing his or her consent, unless the statement specifies a different effective date.

   (3)   Notice and liability. When an action is taken under sub. (1) (b) with the authorization of less than all members, the board shall ensure that all other members are notified immediately of the action and its effective date. Failure to provide the notice does not invalidate the action. A member who does not authorize an action taken under sub. (1) (b) may not be held liable as a result of the action.

   (4)   Records. A cooperative shall retain all statements signed by its members under sub. (1).