New Jersey Statutes Title 10. Civil Rights 10 § 4-9

(1) such meeting is required in order to deal with matters of such urgency and importance that a delay for the purpose of providing adequate notice would be likely to result in substantial harm to the public interest; and

(2) the meeting is limited to discussion of and acting with respect to such matters of urgency and importance; and

(3) notice of such meeting is provided as soon as possible following the calling of such meeting by posting written notice of the same in the public place described in section 3. d.  2 above, and also by notifying the two newspapers described in section 3. d. by telephone, telegram, or by delivering a written notice of same to such newspapers; and

(4) either (a) the public body could not reasonably have foreseen the need for such meeting at a time when adequate notice could have been provided; or (b) although the public body could reasonably have foreseen the need for such meeting at a time when adequate notice could have been provided, it nevertheless failed to do so.