delivered the opinion of the Court.
The proper functioning of our federal system requires that courts of sister states, when appropriate, extend comity to one another. In this appeal, with similar lawsuits in two different state court systems, we must determine the legal principles that *379 govern when a New Jersey court should defer to another jurisdiction’s courts.
This case involves similar environmental insurance coverage actions pending in two different jurisdictions, the first one filed by an insurance company in New York and a later one filed by its insured in New Jersey. The aim of both declaratory judgment actions is to determine whether the insurer is required to defend and indemnify its insured in matters relating to the contamination of property in Camden, New Jersey.
The insurer moved to dismiss the parallel New Jersey case in Superior Court on the ground that deference should be given to the first-filed action. The insured responded that the first-filed doctrine should not apply because the issues and parties in both actions are not identical, because the insurer acted in bad faith by forum shopping, and because New Jersey has the dominant interest — ensuring that funds are available for the clean-up of toxic-laden property. The New Jersey trial court dismissed the action, relying on the first-filed rule. The Appellate Division reversed, finding that the declaratory action in this state is not substantially similar to the one in New York and that “special equities” favor resolution of the coverage issue in this state’s courts.
Despite our strong adherence to principles of comity, the special equities in this ease heavily favor our state courts exercising jurisdiction. Because of New Jersey’s dominant interests, this state is the natural forum for resolving insurance coverage issues concerning hazardous-waste-infested property located within its borders. We therefore affirm the judgment of the Appellate Division.
I.
A.
Plaintiff Sensient Colors Inc. (Sensient) is a New York corporation with headquarters in Missouri. From 1922 to 1988, Sensient, then known as H. Kohnstamm & Co., Inc. (Kohnstamm), operated *380 a factory at 31st Street and Lemuel Street in Camden that manufactured colorants, organic pigments, and dispersions for food, drugs, and cosmetics. 1 In 1998, the then-abandoned factory site was located directly adjacent to a low-income housing development known as Pleasant Gardens, which was home to 1,000 of Camden’s residents. Some of the neighborhood residents lived within 100 feet of the abandoned property.
In January 1998, the New Jersey Department of Environmental Protection (NJDEP) removed from the factory site forty-two drums of hazardous chemicals and drained a tank leaking sodium hydroxide. At the request of the NJDEP, in March 1998 the U.S. Environmental Protection Agency (EPA) intervened, finding on the site thousands of containers of hazardous substances, including flammable liquids, corrosive chemicals, and poisons. At the time, children played on the contaminated grounds of the abandoned and unsecured property, which also had become a haven for suspected drug users and vandals.
During the next several years, with the cooperation of state and local agencies, the EPA removed thousands of drums, bags, and containers of hazardous substances from the factory buildings and excavated over 71,000 tons of lead-contaminated soil and 8,000 tons of debris. 2 An EPA study revealed that the hazardous waste on the factory site leached into the soil and spread to the Pleasant Gardens apartment complex, contaminating the grounds with lead. *381 Moreover, the flow of waste underneath the apartment buildings caused them to subside and crack.
In November 2003, Pleasant Gardens Realty Corporation filed a civil action in the Superior Court, Law Division seeking damages against Sensient and other named defendants for the contamination of its property. The NJDEP was later joined as a defendant and cross-claimed against Sensient, seeking recovery for costs it expended in cleaning up the Camden site. In June 2004, the EPA demanded that Sensient reimburse it in the amount of $10,867,466 plus interest for its remediation of the toxic-waste-ridden property. In its demand, the EPA also noted that additional work might be necessary to address residual contamination. 3
Sensient’s predecessor, Kohnstamm, through its New York office, had purchased from various insurers commercial liability insurance policies covering properties it owned, including the Camden factory and other New Jersey sites. Zurich Insurance Company, predecessor to Zurich American Insurance Company (Zurich), a New York corporation, issued primary coverage insurance through a New York broker to Kohnstamm for a number of years in the 1970s and 1980s. During those years, other insurers issued excess and umbrella policies to Kohnstamm, and for one of those years, Liberty Mutual Insurance Company (Liberty) issued a primary policy.
Between May and July 2004, Sensient notified its insurers of the Pleasant Gardens damages suit and the EPA reimbursement demand. Shortly thereafter, Zurich advised Sensient that, under a reservation of rights, it would participate in the defense of the Pleasant Gardens lawsuit and the EPA recovery demand. Liberty, however, refused to provide a defense or coverage for the two claims. Some excess and umbrella carriers denied coverage; *382 others either did not respond to the coverage request or would not respond until Sensient had exhausted its underlying coverage.
Without in any way signaling to Sensient that it had changed its mind and decided to deny coverage, in March 2005, Zurich filed a declaratory judgment action in a New York trial court, naming Sensient as a defendant. Zurich sought a determination from the court that it had no obligation to defend or indemnify Sensient on the Pleasant Gardens and EPA claims. 4
Less than two months later, Sensient filed its own declaratory judgment action in the Superior Court, Law Division, Camden County, seeking an order that would compel Zurich and other named insurers to defend and indemnify Sensient in the Pleasant Gardens and EPA matters. In its complaint, Sensient also named as a defendant the New Jersey Property-Liability Insurance Guaranty Association (NJPLIGA), which had stepped into the shoes of two insurers that had since become insolvent. 5 In addition to declaratory relief, Sensient sought compensatory damages from those insurers who expressly denied coverage, and punitive damages from Zurich for breaching the duty of good faith and fair dealing owed to its insured.
B.
In response to motions filed by Zurich and other insurers in this state’s Law Division, the trial court dismissed Sensient’s New Jersey suit in favor of the first-filed complaint in New York. The court characterized the ease as a contract dispute over insurance coverage involving an insured incorporated in New York, a policy *383 issued in New York, and an action filed first in New York. The court emphasized that the EPA had completed remediation of the contaminated property, leaving one essential issue to be resolved — whether the insurers are responsible for covering the EPA’s cleanup-reimbursement demand. Because Zurich filed first, the court reasoned that Sensient had the burden of establishing “that New Jersey has a greater interest in this litigation.” Viewing the case to be only about a reimbursement claim, the court concluded that no New Jersey public policy trumped that of New York and therefore the first-filed action had precedence over the New Jersey action.
C.
The Appellate Division reversed and reinstated Sensient’s complaint, finding that the trial court misapplied the first-filed doctrine when measured against the standards set forth in
American Home Products Corp. v. Adriatic Insurance Co.,
286
N.J.Super.
24,
With
American Home Products
as a backdrop, the panel held that the insurers failed to establish a substantial similarity between the New York and New Jersey actions.
Ibid.
According to the panel, there was no showing that the New York court can assert jurisdiction over NJPLIGA or that New York recognizes a cause of action against an insurer for breaching a duty of good faith and fair dealing in processing an insured’s claim.
Ibid.
For those reasons alone, the panel maintained, a comity stay or dismissal should have been denied.
See id.
at 384,
However, the panel also determined that the trial court erred in dismissing Sensient’s claim because of the presence of “special equities.”
Ibid.
In this case, “New Jersey’s contacts with this action are ‘qualitatively and economically predominant’ in comparison to those of New York,” specifically because “the contaminated site is located exclusively in New Jersey and has yet to be completely remediated.”
Id.
at 388,
Critical to the panel’s decision was its recognition of “an actual conflict between the laws of New Jersey and New York in interpreting Zurich’s standard pollution-exelusion clause.”
Id.
at 390,
Another reason supporting its decision, the panel stated, is that relevant documents and witnesses are located in this state and that the litigation in New Jersey had advanced further than the litigation in New York.
Id.
at 391,
We granted the petitions for certification filed by Zurich, Liberty, and one other insurer, Executive Risk Indemnity Inc. 189
N.J.
649,
*385 II.
Zurich and Liberty maintain that the Appellate Division failed to adhere to the general rule of comity that a first-filed action in another jurisdiction takes precedence over a later-filed action in the absence of special equities.
7
Those insurers contend that the predicate for a comity stay or dismissal is not that the parties, claims, and issues in the two lawsuits be “nearly identical,” as required by the appellate panel, but only that they be “substantially the same,” as set forth in
American Home Products.
Because NJPLIGA represents only two of eighteen insurers that wrote just three of approximately thirty-five policies at issue, Zurich and Liberty argue that even without NJPLIGA in the first-filed action, the New York and New Jersey cases have substantially similar parties. They also argue that the two actions involve identical legal claims — a declaration of the obligations owed by the named insurers to Sensient in the EPA demand and the Pleasant Gardens litigation. Moreover, Zurich insists that Sensient cannot make out a credible claim that Zurich engaged in bad faith conduct, but even if it could, New York permits such claims when the insurer acts “in gross disregard” of its insured’s interests,
New England Ins. Co. v. Healthcare Underwriters Mut. Ins. Co.,
Zurich and Liberty, moreover, contend that Sensient has not established special equities warranting a comity stay or dismissal. According to the insurers, the Appellate Division elevated the location of the site — the only pertinent New Jersey contact — over every other factor favoring deference. The insurers emphasize that both Zurich and Sensient are New York corporations, that Sensient is headquartered in Missouri and has no current presence in New Jersey, and that Sensient has not shown that a significant number of witnesses or documents are located in New Jersey. Last, the insurers submit that having the case proceed in *386 New York does not necessarily mean that New Jersey’s law will not be applied.
In response, Sensient contends that “[t]he Appellate Division properly applied settled principles of comity and appropriately considered New Jersey’s paramount interest in the remediation of New Jersey hazardous waste sites in deciding” to reinstate the insurance coverage action in this state.
In addressing the jurisdictional battle between Sensient and its insurers, we begin by reviewing the first-filed doctrine and the policy reasons underpinning it.
III.
A.
New Jersey has long adhered to “the general rule that the court which first acquires jurisdiction has precedence in the absence of special equities.”
Yancoskie v. Del. River Port Auth.,
78
N.J.
321, 324,
The question is not whether a state court has the power to exercise jurisdiction over a case filed within its jurisdiction, but
*387
whether the court should restrain itself and not exercise that power.
Ibid.; see also Gosschalk v. Gosschalk,
48
N.J.Super.
566, 579,
As already suggested, however, the first-filed rule is not an inflexible doctrine. In New Jersey, the presence of special equities may lead a court to disregard the traditional deference paid to the first-filed action in another state and to exercise jurisdiction over a case filed in this state. Special equities are reasons of a compelling nature that favor the retention of jurisdiction by the court in the later-filed action. Special equities have been found when one party has engaged in jurisdiction shopping to deny the other party the benefit of its natural forum.
See Margarum v. Moon,
63
N.J. Eq.
586, 589, 592,
For example, in
Moses H. Cone Memorial Hospital v. Mercury Construction Corp.,
460
U.S.
1, 103
S.Ct.
927,
In addition, courts have found special equities when significant state interests, such as the remediation of polluted sites, are implicated,
see Am. Home Prods., supra,
286
N.J.Super.
at 40-41,
Finally, courts have found special equities when it would cause “great hardship and inconvenience” to one party by proceeding in the first-filed action and no unfairness to the opposing party by proceeding in the second-filed action.
See O’Loughlin, supra,
6
N.J.
at 180-81,
In short, a stay or dismissal of the second-filed action should be denied if an “injustice would be perpetrated” on a party in the first-filed action and “no hardship, prejudice or inconvenience” would be inflicted on the other by proceeding in the second-filed case.
Gosschalk, supra,
48
N.J.Super.
at 579,
B.
The principles governing whether a comity stay or dismissal of a second-filed action should be granted were distilled by the Appellate Division in
American Home Products, supra,
which established for the first time an analytical framework allocating the burdens of persuasion to be borne by parties arguing for or against the stay or dismissal.
See
286
N.J.Super.
at 37,
In reaching that decision, the Appellate Division applied a three-factor test that it developed from “existing'precedent and common sense.”
Id.
at 37,
This is our first occasion to review the
American Home Products
paradigm, which has been followed by a number of appellate panels, including the panel in this case.
See Sensient Colors, supra,
388
N.J.Super.
at 383-91,
We agree that the party moving for a comity stay or dismissal has the burden of establishing the presence of
American Home Products
factors one and two — that an earlier-filed action in another state “involve[s] substantially the same parties, the same claims, and the same legal issues.”
Am. Home Prods., supra,
286
N.J.Super.
at 37,
Thus, if the two cases involve substantially the same parties, claims, and issues, the burden shifts to the party arguing that jurisdiction should be retained in the second-filed action. That party must then show that it will not have the opportunity for adequate relief in the first-filed jurisdiction. The inability of the first-filed jurisdiction to provide adequate relief is akin to a special equity.
9
All special equities are grounded in principles of fairness, and are implicated when a first-filed action may not do full justice to a party.
See O’Loughlin, supra,
6
N.J.
at 179-80,
The defendant seeking a comity stay or dismissal in the second-filed action should not have to argue that the other party will receive a fair day in the courts of another jurisdiction. The plaintiff in the second-filed action contending that it cannot receive a fair hearing on the merits of its claims in the courts of the first-filed jurisdiction is in the best position to advance that argument. That approach comports with the presumption in favor of the first-filed action and our recognition that “[w]e do not distrust the proceedings of the courts of our sister states.... ”
Cogen Techs., supra,
241
N.J.Super.
at 272,
*393 In summary, a party moving for a comity stay or dismissal must show that there is a first-filed action in another jurisdiction involving substantially the same parties, claims, and legal issues as the action in this state. Once that is established, the party opposing a stay or dismissal must demonstrate the presence of one or more special equities that overcome the presumption favoring the first-filed action.
TV.
We now apply those principles to the facts of this case. Although we have considerable doubts about the Appellate Division’s conclusion that the New Jersey and New York declaratory judgment actions do not involve substantially similar parties and claims, we need not address that point because we are persuaded that special equities strongly support New Jersey exercising jurisdiction over this case. Despite the questions raised about whether bad faith is a viable claim and NJPLIGA an essential party in the New York action, we begin our analysis assuming that there is a substantial similarity of parties and claims between the two lawsuits and that the insurers therefore have met their initial burden favoring the first-filed action. We next turn to the special equities that support the New Jersey trial court’s exercise of jurisdiction over the second-filed action.
Zurich issued commercial liability insurance policies to Sensient’s predecessor, Kohnstamm, providing coverage for its Camden factory site. After Sensient notified Zurich of the Pleasant Gardens suit and the EPA reimbursement demand, the insurer informed Sensient that it would participate in the defense of those matters under a reservation of rights. Without a denial of coverage by Zurich, Sensient had little reason to file an action in New Jersey for a declaration of its rights. In a preemptive move similar to the one condemned in
Moses Cone,
Zurich without warning filed suit in New York, thereby denying Sensient the opportunity to select its own forum for resolving the coverage dispute. An insurer has a duty to act in good faith with its
*394
insured.
See Pickett v. Lloyd’s,
131
N.J.
457, 467,
The most important special equity for not deferring to the first-filed rule is New Jersey’s strong public policy interest in the remediation of environmental contamination within its borders. That interest includes ensuring that an insurance policyholder is not wrongly denied funds for the clean-up of a hazardous-waste-ridden site. This case touches not just on property, but on the health and safety of New Jersey’s residents, a number of whom were exposed unsuspectingly to toxic substances, such as lead. We have made it clear that “the governmental interests of a New Jersey forum ... are protection of the regulatory process in New Jersey, protection of New Jersey policyholders, protection of the victims of pollution, and protection of the New Jersey environment.”
Pfizer, supra,
154
N.J.
at 207,
Zurich and Liberty’s assertion that this ease is merely a contractual dispute about the payment of damages, and not about remediation, is hotly contested. The EPA, NJDEP, and Pleasant Gardens have declared that further toxic waste clean-up emanating from the former Kohnstamm factory site may be required and further remediation costs incurred. We can neither ignore the possibility of future remediation expenses nor assume that an insured, such as Sensient, will be able to cover such costs without insurance proceeds to which it may be entitled. This state retains an interest in ensuring that the clean-up of any contaminated New Jersey site is fully funded.
See Unisys Corp. v. Ins. Co. of N. Am.,
154
N.J.
217, 221-22,
*395 Zurich and Liberty contend that this state no longer has an interest in the outcome of the coverage issue once the remediation is completed. We disagree. New Jersey has a strong interest in spurring the rapid clean-up of environmental contamination. If insurance coverage will disappear once remediation is completed, the government or a polluter would be given a perverse incentive to delay remediation efforts until the conclusion of the court ease determining coverage. See ibid.
We have recognized that “[i]f the principal location of the insured risk is in a single state for a major portion of the insurance period, that location is the most important contact to be considered in the choice of the applicable law.”
Gilbert Spruance Co. v. Pa. Mfrs. ’ Ass’n Ins. Co.,
134
N.J.
96, 104,
Cast in that light, New Jersey’s interest becomes more compelling because of the divergent public policy approaches taken by New York and this state. At the heart of this case is the pollution-exclusion clause in the insurance policies issued to Sensient’s predecessor. As a matter of public policy, New Jersey will not enforce the standard pollution-exclusion clause unless “the insured intentionally discharged, dispersed, released, or caused the escape of a known pollutant.”
Morton, supra,
134
N.J.
at 31,
Thus, enforcement of the pollution-exclusion clause will likely depend on which state’s substantive law applies. Although in this case we cannot say for certain whether New York would apply its own laws,
11
we are certain that a New Jersey court will apply the laws of this state.
See Pfizer, supra,
154
N.J.
at 205,
We also note the presence of other special equities, which are deserving of lesser weight and by themselves not dispositive in this case. One such special equity is that the New Jersey action has progressed further than the first-filed action in New York.
Cf. Gosschalk, supra,
48
N.J.Super.
at 580,
The combination of the special equities clearly overcomes the presumption favoring the first-filed action in New York and supports the coverage action proceeding in its natural forum— New Jersey. The trial court’s failure to consider and give proper weight to those equities was an abuse of discretion that justified the Appellate Division’s reinstatement of the New Jersey action. 12
Y.
The first-filed rule promotes cooperation and mutual respect among the various jurisdictions of our federal system. In matters of justice, comity — not competition — must be the guiding principle by which each state’s courts decide the appropriate choice of forum when substantially similar actions are filed in more than one jurisdiction. The first-filed rule, however, is not unbending and allows for certain well-recognized exceptions that further the interests of fairness and judicial efficiency. In ruling as we do, we seek no parochial advantage for our court system. We have taken an approach that, if applied as a universal rule, *398 would place every state on an equal playing field. If the circumstances were reversed and the waste-infested property were located in New York, given our analysis today, we would expect New Jersey to defer to its sister state, even if the first-filed action were in this state.
Because it failed to identify and give proper weight to the special equities that supported a denial of the motions for a comity stay or dismissal of the New Jersey declaratory judgment action, the trial court abused its discretion. For the reasons we have expressed, we affirm the judgment of the Appellate Division, which reinstated Sensient’s complaint, and remand for proceedings consistent with this opinion.
Opposed — None.
Notes
Sensient’s parent corporation is Sensient Technologies Corporation, which was previously known as Universal Foods Corporation. In 1988, Universal Foods purchased Kohnstamm. That same year, Kohnstamm transferred ownership of the factory to its wholly-owned subsidiary, General Color Company, a New Jersey corporation, and then severed ties to General Color. General Color continued operating the factory until 1997. In 1990, Kohnstamm changed its name to the Warner-Jenkinson Company, Inc. and operated under that name for twelve years until it became known as Sensient in 2002.
By 2004, the City of Camden apparently had initiated proceedings to condemn the property with the intent of transferring title to Westfield Acres Urban Renewal Associates II, LP, which planned to construct a low-income residential development on the site.
Because Sensient did not meet the EPA’s demand, the federal government initiated a lawsuit in the United States District Court for the District of New Jersey to recover its remediation costs, now exceeding $16 million.
Alternatively, Zurich demanded contribution from Sensient’s other insurers. Despite disclaiming coverage, Zurich continues to defend Sensient against both the Pleasant Gardens and EPA claims.
NJPLIGA is a nonprofit, unincorporated statutory entity that takes the place of insolvent insurers, covering certain claims under certain insurance policies. See New Jersey Property-Liability Insurance Guaranty Association Act, N.J.S.A. 17:30A-1 to -20.
None of Sensient's other insurers filed a petition for certification. Allstate Insurance Company submitted a letter joining in the arguments advanced in Zurich and Liberty's joint petition.
Executive Risk is relying on the arguments advanced by Zurich and Liberty.
It bears mentioning that each state must give full faith and credit to the judgments of every other state.
See U.S. Const.
art. IV, § 1. "The rule of primacy to the first final judgment is a necessary incident to the requirement of full faith and credit.”
Hanson v. Denckla,
357
U.S.
235, 256, 78
S.Ct.
1228, 1241,
Two Appellate Division cases highlight this point. In
Innes, supra,
because the defendant in the second-filed New Jersey action did not show that a foreign court would apply the best interests of the child standard in a child custody case, the court concluded that the plaintiff did not have the opportunity for adequate relief in the foreign proceeding. 391
N.J.Super.
at 494,
We acknowledge that Zurich claims that Sensient was dilatory in providing a list of its other insurers, but that fault, even if true, does not appear sufficient to warrant the filing of an unwarned and unanticipated lawsuit denying coverage.
A discussion of applicable New York choice of law rules can be found in
Zurich Insurance Co. v. Shearson Lehman Hutton, Inc.,
84
N.Y.2d
309, 618
N.Y.S.2d
609,
We have been informed that the parties have agreed to dismiss the New York litigation if the New Jersey trial court's comity dismissal is not reinstated. There is reason, however, to believe that New York would defer to our determination today even in the absence of the parties' agreement to dismiss the New York action.
See, e.g., Flintkote Co. v. Am. Mut. Liab. Ins. Co.,
