New Jersey Statutes Title 2B. Court Organization and Civil Code 2B § 20-14

a. Persons who are sent questionnaires concerning their qualifications for jury service who fail to respond to the questionnaire without reasonable excuse shall be liable for a fine not to exceed $500, payable to the county from which the questionnaire was sent, or may be punished for contempt of court.

b. Persons summoned as jurors who, without reasonable excuse, either fail to appear for jury service or refuse to serve, shall be liable for a fine not to exceed $500, payable to the county in which the person was summoned, or may be punished for contempt of court.