N.J. Stat. § 40A:11-32
Nothing herein contained shall be construed as depriving any governing body of the right to reject a bid at any time prior to the actual award of a contract, where the circumstances of the prospective bidder have changed subsequent to the qualification and classification of the bidder, which in the opinion of the awarding contracting unit would adversely affect the responsibility of the bidder. Before taking final action on any such bid, the contracting agent concerned shall notify the bidder and afford the bidder an opportunity to present any additional information which might tend to sustain the existing classification.
No person shall be qualified to bid on any contract unless that person shall have submitted a statement or answers as herein required within a period of six months preceding the date of opening of bids for the contract, if the bidders thereon are required to be classified hereunder. In any case where the contracting unit shall require classification of the bidders in compliance with these sections, each bidder on any contract shall be required to submit a statement listing the changes in the statement or answers herein required as part of the bidder's bid submission.
N.J.S. § 40A:11-32