N.J. Stat. § 2A:44-132: Filing notice of lien claim

A lien claimant may, at any time before the whole work to be performed by the contractor for the public agency is either completed or accepted by resolution of the public agency, or within 60 days thereafter, file with the chairman or other head officer or with the secretary or clerk of the public agency, a notice of lien claim verified by oath of the claimant or his agent.

L.1951 (1st SS), c.344.