New Jersey Statutes Title 15A. Corporations, Nonprofit 15A § 5-5

a. Notice of a meeting need not be given to any member who signs a waiver of the notice, in person or by proxy, whether before or after the meeting.  The attendance of any member at a meeting, in person or by proxy, without protesting prior to the conclusion of the meeting the lack of notice of the meeting, shall constitute a waiver of notice by that member.

b. Whenever members are authorized to take any action after the lapse of a prescribed period of time, the action may be taken without the lapse if the requirement is waived in writing, in person or by proxy, before or after the taking of that action, by every member entitled to vote thereon as at the date of the taking of the action.