equitable estoppel doctrine in New Jersey

2026The doctrine of equitable estoppel "is designed to prevent injustice by not permitting a party to repudiate a course of action on which another party has relied to his detriment." Knorr v. Smeal, 178 N.J. 169, 178 (2003).

2024The equitable estoppel doctrine is limitedly applied to "conduct, either intentionally or under circumstances that induced reliance." Id. at 279 (quoting Knorr v. Smeal, 178 N.J. 169, 178 (2003)).

2003See Miller v. Miller, 97 N.J. 154, 163 , 478 A.2d 351 (1984) (“To establish a claim of equitable estoppel, the claiming party must show that the alleged conduct was done, or representation was made, intentionally or under such circumstances that it was both natural and probable that it would induce action.”); State v. King, 340 N.J.Super. 390, 399 , 774 A.2d 629 (App.Div.2001) (noting that “to invoke the doctrine of equitable estoppel, the equities must weigh in favor of the party seeking its protection.”).

2003See Miller v. Miller, 97 N.J. 154, 163 , 478 A.2d 351 (1984) (“To establish a claim of equitable estoppel, the claiming party must show that the alleged conduct was done, or representation was made, intentionally or under such circumstances that it was both natural and probable that it would induce action.”); State v. King, 340 N.J.Super. 390, 399 , 774 A.2d 629 (App.Div.2001) (noting that “to invoke the doctrine of equitable estoppel, the equities must weigh in favor of the party seeking its protection.”).

2024The equitable estoppel doctrine is limitedly applied to "conduct, either intentionally or under circumstances that induced reliance." Id. at 279 (quoting Knorr v. Smeal, 178 N.J. 169, 178 (2003)).

2021It is "rarely applied against a governmental entity, . . . particularly when estoppel would 'interfere with essential government functions,'" O'Malley v. Dep't of Energy, 109 N.J. 309, 316 (1987) (quoting Vogt v. Borough of Belmar, 14 N.J. 195, 205 (1954) (citations omitted)). "[T]he creation of legislation is an essential function of the Legislature, so that sovereign immunity bars the equitable estoppel claim." Berg, 225 N.J. at 280 .

2019Super. 484, 489 (App. Div. 1976)).] We recognize the doctrine of equitable estoppel is "rarely invoked against a governmental entity." Middletown, 162 N.J. at 367 (quoting Wood v. Borough of Wildwood Crest, 319 N.J.

2005The Court explained, Although the doctrine of equitable estoppel is “ ‘rarely invoked against a governmental entity,’ ” Wood v. Borough of Wildwood Crest, 319 N.J.Super. 650, 656 , 726 A.2d 310 (App.Div.1999) (quoting County of Morris v. Fauver, 153 N.J. 80, 104 , 707 A.2d 958 (1998)), the doctrine “may be invoked against a municipality “where the interests of justice, morality and common fairness clearly dictate that course.’ ” Middletown Township Policemen’s Benevolent Ass’n Local No. 124 v. Township of Middletown, 162 N.J. 361, 367 , 744 A.2d 649 (2000) (quoting Gruber v. Mayor and Twp.

2009Our Supreme Court has defined the doctrine of equitable estoppel as: the effect of the voluntary conduct of a party whereby he is absolutely precluded, both at law and in equity, from asserting rights which might perhaps have otherwise existed ... as against another person, who has in good faith relied upon such conduct, and has been led thereby to change his position for the worse. [ Highway Trailer Co. v. Donna Motor Lines, Inc., 46 N.J. 442, 449 , 217 A. 2d 617 , cert. denied sub nom.

2009Our Supreme Court has defined the doctrine of equitable estoppel as: the effect of the voluntary conduct of a party whereby he is absolutely precluded, both at law and in equity, from asserting rights which might perhaps have otherwise existed ... as against another person, who has in good faith relied upon such conduct, and has been led thereby to change his position for the worse. [ Highway Trailer Co. v. Donna Motor Lines, Inc., 46 N.J. 442, 449 , 217 A. 2d 617 , cert. denied sub nom.

2025Sys., 443 N.J.

2024Sys., 443 N.J.

2025Servs., LLC, 215 N.J. 174, 189 (2013) (quoting Knorr, 178 N.J. at 178 ).

2021In other words, in assessing whether parties can be compelled to arbitrate, courts can use principles of contract law even in the absence of an express arbitration clause. [Hirsch, 215 N.J. at 188-89 .] Hirsch considered that a non-signatory could be compelled to arbitrate based on the doctrine of equitable estoppel, finding that there needed to be proof of detrimental reliance by one of the parties for application of estoppel.

2021The doctrine is limited to "conduct, either express or implied, which reasonably misleads another to his prejudice so that a repudiation of such conduct would be unjust in the eyes of the law." McDade v. Siazon, 208 N.J. 463, 489 (2011) (quoting Dambro v. Union Cnty.

2013Equitable estoppel applies when ‘“conduct, either express or implied, which reasonably misleads another to his prejudice so that a repudiation of such conduct would be unjust in the eyes of the law.’ ” McDade v. Siazon, 208 N.J. 463, 480 , 32 A.3d 1122 (2011) (quoting Dambro v. Union Cnty.

2021It is "rarely applied against a governmental entity, . . . particularly when estoppel would 'interfere with essential government functions,'" O'Malley v. Dep't of Energy, 109 N.J. 309, 316 (1987) (quoting Vogt v. Borough of Belmar, 14 N.J. 195, 205 (1954) (citations omitted)). "[T]he creation of legislation is an essential function of the Legislature, so that sovereign immunity bars the equitable estoppel claim." Berg, 225 N.J. at 280 .

2016See O’Malley, supra, 109 N.J. at 316 , 537 A.2d 647 (noting application of equitable estoppel against governmental entity is particularly rare when it would interfere “with essential governmental functions” (quoting Vogt v. Borough of Belmar, 14 N.J. 195, 205 , 101 A.2d 849 (1954)); 28 Am.Jur.2d Estoppel & Waiver § 128 (2011) (“It has been held that estoppel may not be applied against the government acting in its sovereign capacity.”).

2019Co. of N.Y., 35 N.J.

2019Co. of N.Y., 35 N.J.

2025See Joe D'Egidio Landscaping, Inc. v. Apicella, 337 N.J.

2005In relying on the doctrine of equitable estoppel, this court explained: Equitable estoppel has been defined as "the effect of the voluntary conduct of a party whereby he is absolutely precluded, both at law and in equity, from asserting rights which might perhaps have otherwise existed ... as against another person, who has in good faith relied upon such conduct, and has been led thereby to change his position for the worse ..." The doctrine is "designed to prevent a party's disavowal of previous conduct if such repudiation `would not be responsive to the demands of justice and good conscience

1993The doctrine of equitable estoppel is applied “only in very compelling circumstances,” Timber Properties, Inc. v. Chester Township, 205 N.J.Super. 273, 278 , 500 A.2d 757 (Law Div. 1984), “where the interests of justice, morality and common fairness clearly dictate that course.” Gruber, supra, 39 N.J. at 13 , 186 A.2d 489 .

1993The doctrine of equitable estoppel is applied “only in very compelling circumstances,” Timber Properties, Inc. v. Chester Township, 205 N.J.Super. 273, 278 , 500 A.2d 757 (Law Div. 1984), “where the interests of justice, morality and common fairness clearly dictate that course.” Gruber, supra, 39 N.J. at 13 , 186 A.2d 489 .

1985In applying the doctrine of equitable estoppel, the court stressed that the defendant by his conduct actually represented himself to the child as his father and that the child sincerely believed that defendant was his father. 126 N.J.Super. at 400 .

1985In applying the doctrine of equitable estoppel, the court stressed that the defendant by his conduct actually represented himself to the child as his father and that the child sincerely believed that defendant was his father. 126 N.J.

2005In relying on the doctrine of equitable estoppel, this court explained: Equitable estoppel has been defined as "the effect of the voluntary conduct of a party whereby he is absolutely precluded, both at law and in equity, from asserting rights which might perhaps have otherwise existed ... as against another person, who has in good faith relied upon such conduct, and has been led thereby to change his position for the worse ..." The doctrine is "designed to prevent a party's disavowal of previous conduct if such repudiation `would not be responsive to the demands of justice and good conscience

2005In relying on the doctrine of equitable estoppel, this court explained: Equitable estoppel has been defined as "the effect of the voluntary conduct of a party whereby he is absolutely precluded, both at law and in equity, from asserting rights which might perhaps have otherwise existed ... as against another person, who has in good faith relied upon such conduct, and has been led thereby to change his position for the worse ..." The doctrine is "designed to prevent a party's disavowal of previous conduct if such repudiation `would not be responsive to the demands of justice and good conscience

2004Co., 636 A. 2d 1109 (Pa.1994), and summarized its holding to be that the carrier did not act in bad faith by failing to advise its insured of the statute of limitations provision in the no-fault policy absent a factual basis to invoke the doctrine of equitable estoppel.

2003Co., 535 Pa. 531 , 636 A. 2d 1109, 1113 (1994) (absent factual basis to invoke doctrine of equitable estoppel, insured did not act in bad faith by failing to advise insured of statute of limitations provision under no-fault policy); Cf. 17 Couch on Insurance § 238.24 (3rd ed.2000) (an insurer is under no duty to inform claimant of potential benefits under an insurance policy).

2003Compare, Lehen v. Atlantic Highlands, 252 N.J.Super. 392, 400 , 599 A.2d 1283, 1287 (App.Div.1991).

1994The doctrine of equitable estoppel is "hesitantly applied against public entities but it will be invoked against them where interests of justice, morality and common fairness dictate." Lehen, 252 N.J.

2001The Appellate Division reversed the TPAF's order, finding that "all of the petitioners herein having irrevocably changed their positions in reliance on TPAF approval granted almost two years before Fair Lawn for some and up to eight years earlier for others, the interest of justice mandates application of the doctrine of equitable estoppel." Id. at 476, 432 A. 2d 560 .

2000See Miller v. Bd. of Trustees of the Teachers’ Pension and Annuity Fund, 179 N.J.Super. 473, 479 , 432 A.2d 560 (App.Div.), certif. denied, 88 N.J. 502 , 443 A.2d 714 (1981) (reasoning that doctrine of equitable estoppel “is intended to prevent a party’s disavowal of prior conduct if such *373 repudiation would frustrate the demands of justice and good conscience.” (citations omitted)).

2026The parties do not dispute plaintiff A-2391-24 15 relied on that approval: plaintiff canceled his vacation plans and worked during the transition period as requested by the Acting County Prosecutor, with the understanding he could carry over his unused vacation days. "[E]quitable considerations are relevant in evaluating the propriety of conduct taken after substantial reliance by those whose interests are affected by subsequent actions . . . [in order] to avoid wrong or injury ensuing from reasonable reliance upon such conduct." Ibid. (alterations and omission in original) (quoting Skulski v.

2025"It is well established that the doctrine of equitable estoppel is 'rarely invoked against a governmental entity.'" Motley v. Borough of Seaside Park Zoning Bd. of Adjustment, 430 N.J.

2025Sys., 458 N.J.

2021In Knorr v. Smeal, 178 N.J. 169, 178 (2003), our Supreme Court explained that the equitable-estoppel doctrine is: "founded in the fundamental duty of fair dealing imposed by law." Casamasino v. City of Jersey City, 158 N.J. 333, 354 (1999).