Palmer, J.
This appeal requires us to decide whether § 3 of No. 93-77 of the 1993 Public Acts (P.A. 93-77),1 [439]*439which retroactively modifies the uninsured and underin-sured motorist provisions of certain automobile liabil[440]*440ity insurance policies, comports with the United States and Connecticut constitutions. The plaintiff, Luz Ser[441]*441rano, was insured under an automobile liability policy issued by the defendant, Aetna Insurance Company, that required her to file an uninsured or underinsured motorist claim within two years from the date of an accident. The plaintiff commenced this action for underinsured motorist benefits more than two years from the date of the accident, claiming, inter alia, that her right to commence an action for such benefits had been restored by § 3 of P.A. 93-77. The trial court rejected the plaintiffs claim, concluding that the act’s purported modification of the terms of the policy violated the defendant’s contractual rights under the United States constitution. Thereafter, the trial court granted the defendant’s motion for summary judgment on the ground that the action had not been filed within two years from the date of the accident as required by the policy. The plaintiff appealed from the judgment of the trial court to the Appellate Court, which remanded the case to the trial court for an articulation of the facts and the law underlying its judgment. The trial court rendered its articulation and, thereafter, the case was transferred to this court pursuant to General Statutes § 51-199 (b) (2)2 and Practice Book § 4027. We reverse the judgment of the trial court.
The relevant facts are undisputed. On May 23,1989, the plaintiff, while operating an automobile owned by her mother, sustained injuries resulting from an accident caused by the negligence of the driver of a second automobile (tortfeasor). At the time of the accident, the tortfeasor was covered by an insurance policy with liability limits of $20,000. The plaintiff was insured under an automobile liability policy issued by the defendant to her mother.3 Under the underinsured [442]*442motorist provisions of that policy,4 which provided coverage for, inter alia, damages and injuries sustained as a result of the negligence of the owner or operator of an underinsured motorist, the defendant was obligated to pay to the plaintiff all sums, up to a maximum of $100,000, that she would be entitled to recover from the tortfeasor after the plaintiff had exhausted the liability limits of the tortfeasor’s policy.5 The policy issued by the defendant also required that an insured bring a claim or suit under the policy within two years from the date of the accident.6
On April 16,1991, the plaintiff commenced an action against the tortfeasor seeking damages arising from the accident. In the fall of 1991, the plaintiff’s claim against the tortfeasor was settled for $20,000, thereby exhausting the liability limits of the tortfeasor’s policy. By complaint dated January 13,1992, the plaintiff instituted this action against the defendant for underinsured motorist benefits. The plaintiff also filed with the defendant a written demand for benefits dated January 30, 1992. The defendant rejected the demand as untimely and, thereafter, moved for summary judgment on the plaintiff’s action, claiming that she had failed to file a suit or claim for underinsured motorist benefits within two years of the accident as required by the policy.
[443]*443Public Act 93-77 took effect on May 20, 1993, during the pendency of this litigation. Section 3 of P.A. 93-77 provides, inter alia, that no claim for underin-sured motorist benefits that was pending on December 8, 1992, and in which a settlement had not been reached or a final judgment rendered prior to May 20, 1993, shall be barred by virtue of any policy provision limiting the period for the filing of a claim to less than the three year period, with tolling provisions, allowed under General Statutes § 38a-336, as amended by § 2 of P.A. 93-77.7 The plaintiff claimed that because her action for underinsured motorist benefits was governed [444]*444by the terms of § 3, the two year limitation period of the policy was unenforceable. The defendant conceded that § 3 of P.A. 93-77, by its terms, applied to the plaintiffs action,8 but argued that its retroactive modification of the terms of the policy violated the defendant’s due process and contractual rights guaranteed by the United States constitution.
The trial court found that the plaintiff had not filed an action or claim against the defendant within two years from the date of the accident as required under the policy.9 The trial court further held that because the plaintiff’s right to seek underinsured motorist benefits had already expired under the otherwise lawful provisions of the policy, § 3 of P.A. 93-77 operated as a substantial and unjustified impairment of the parties’ contractual relationship in contravention of the contract clause of article one, § 10, of the United States [445]*445constitution. The court therefore refused to apply § 3 of P.A. 93-77 to nullify the two year limitation period of the policy and, accordingly, granted the defendant’s motion for summary judgment on the ground that the plaintiffs action was time barred under that policy provision.
On appeal, the plaintiff contends that § 3 of P.A. 93-77 is constitutional and, consequently, that the trial court improperly rendered summary judgment for the defendant on the ground that her action was untimely.10 The defendant claims that the trial court correctly held that § 3 violates its contractual rights under article one, § 10, of the United States constitution. The defendant further contends, as alternate grounds for affirmance, that § 3 violates both the due process clause of the fourteenth amendment to the federal constitution, and article first, § 1, of our state constitution. We conclude that § 3 of P.A. 93-77 passes muster under each of these constitutional provisions11 and, accordingly, we reverse the judgment of the trial court.
I
The plaintiff claims that the trial court improperly concluded that § 3 of P.A. 93-77 violates the contract clause of article one, § 10, of the United States constitution. We agree with the plaintiff.
The constitution of the United States, article one, § 10, provides that “[n]o State shall . . . pass any [446]*446. . . Law Impairing the Obligation of Contracts . . . .” Although the language of the contract clause speaks in absolute terms, “literalism in the construction of the . . . clause . . . would make it destructive of the public interest by depriving the State of its prerogative of self-protection.” (Internal quotation marks omitted.) Allied Structural Steel Co. v. Spannaus, 438 U.S. 234, 240, 98 S. Ct. 2716, 57 L. Ed. 2d 727 (1978); see also Keystone Bituminous Coal Assn. v. DeBenedictis, 480 U.S. 470, 502, 107 S. Ct. 1232, 94 L. Ed. 2d 472 (1987); Connecticut Education Assn., Inc. v. Tirozzi, 210 Conn. 286, 301, 554 A.2d 1065 (1989). The constitutional prohibition against the impairment of contractual obligations, therefore, must be accommodated to the state’s interest in safeguarding the welfare of its citizens. Energy Reserves Group, Inc. v. Kansas Power & Light Co., 459 U.S. 400, 410, 103 S. Ct. 697, 74 L. Ed. 2d 569 (1983); United States Trust Co. v. New Jersey, 431 U.S. 1, 16, 21, 97 S. Ct. 1505, 52 L. Ed. 2d 92 (1977). Thus, states must be allowed to exercise their broad police power to enact general regulatory measures without fear “that private contracts will be impaired, or even destroyed, as a result.” United States Trust Co. v. New Jersey, supra, 22. Accordingly, “a statute does not violate the [cjontract [cjlause simply because it has the effect of restricting, or even barring altogether, the performance of duties created by contracts entered into prior to its enactments.”12 Exxon Corp. v. Eagerton, 462 U.S. 176,190,103 S. Ct. 2296, 76 L. Ed. 2d 497 (1983). Our task, therefore, is to balance the competing private and public interests at stake when the state seeks to adjust existing contractual relationships.
[447]*447In adjudicating a claim that a legislative enactment runs afoul of the contract clause, we must “first ask whether the change in [the] law has operated as a substantial impairment of a contractual relationship.” (Internal quotation marks omitted.) General Motors Corp. v. Romein, 503 U.S. 181, 186, 112 S. Ct. 1105, 117 L. Ed. 2d 328 (1992); see also Energy Reserves Group, Inc. v. Kansas Power & Light Co., supra, 459 U.S. 411; Schieffelin & Co. v. Dept. of Liquor Control, 194 Conn. 165, 177, 479 A.2d 1191 (1984). “This inquiry has three components: whether there is a contractual relationship, whether a change in law impairs that contractual relationship, and whether the impairment is substantial.” General Motors Corp. v. Romein, supra, 186; see also Energy Reserves Group, Inc. v. Kansas Power & Light Co., supra, 411; Allied Structural Steel Co. v. Spannaus, supra, 438 U.S. 244. If upon application of this test it appears that the challenged legislation substantially impairs existing contract rights, the enactment may nevertheless withstand constitutional scrutiny if it serves a significant and legitimate public purpose; Energy Reserves Group, Inc. v. Kansas Power & Light Co., supra, 411-12; United States Trust Co. v. New Jersey, supra, 431 U.S. 22; Schieffelin & Co. v. Dept. of Liquor Control, supra, 182; and its “adjustment of the rights and responsibilities of [the] contracting parties [is based] upon reasonable conditions and [is] of a character appropriate to the public purpose justifying [the legislation’s] adoption.” (Internal quotation marks omitted.) Energy Reserves Group, Inc. v. Kansas Power & Light Co., supra, 412; see also United States Trust Co. v. New Jersey, supra, 22; Schieffelin & Co. v. Dept. of Liquor Control, supra, 184.
Because § 3 of P. A. 93-77 restores to the plaintiff a right that had expired under the otherwise enforceable provisions of the policy, the defendant’s claim that the legislation operates as an impairment of a preexisting [448]*448contractual relationship cannot seriously be contested. However, “a finding that there has been a technical impairment is merely a preliminary step in resolving the more difficult question whether that impairment is permitted under the Constitution.” United States Trust Co. v. New Jersey, supra, 431 U.S. 21; see also Connecticut Education Assn., Inc. v. Tirozzi, supra, 210 Conn. 301-302. The issue ultimately to be determined, therefore, is whether the impairment is substantial. General Motors Corp. v. Romein, supra, 503 U.S. 185-86. We are not persuaded that § 3 substantially impairs the parties’ rights and obligations under the automobile liability insurance policy issued by the defendant.13
Several factors are to be considered in determining the degree to which the challenged enactment operates as an impairment of the parties’ contractual relationship. These include “the severity of the impairment, the extent to which it frustrates a party’s reasonable contractual expectations and the extent to which the subject matter of the impairment has been regulated in the past.” Schieffelin & Co. v. Dept. of Liquor Control, supra, 194 Conn. 177-78; see also Energy Reserves Group, Inc. v. Kansas Power & Light Co., supra, 459 U.S. 411; Allied Structural Steel Co. v. Spannaus, supra, 438 U.S. 245-47, 250. “Minimal alteration of contractual obligations may end the inquiry at its first [449]*449stage.” Allied Structural Steel Co. v. Spannaus, supra, 245. “If, however, the impairment is severe, the legislation will be subjected to an increased level of scrutiny.” Schieffelin & Co. v. Dept. of Liquor Control, supra, 178.
The automobile liability insurance policy under which the plaintiff was insured required her to file a claim or action for underinsured motorist benefits not later than two years from the date of the accident. The trial court concluded that the plaintiff had not done so and, furthermore, that she had failed to establish circumstances sufficient, to excuse her noncompliance with the two year limitation period of the policy.14 Thus, the court concluded that the plaintiff’s unexcused failure to commence an action within the contractually required time period relieved the defendant of any liability to the plaintiff under the policy. The plaintiff’s right to file a claim against the defendant was revived, however, some two years later, upon the passage of P.A. 93-77. Because the challenged legislation restores to the plaintiff the right to seek up to $80,000 in underinsured motorist benefits; see footnote 5; its effect on the legal relations of the parties cannot be characterized as merely incidental or insignificant. We proceed, therefore, on the premise that § 3 operated as a sufficient impairment of the parties’ contractual relationship to warrant consideration of the remaining two factors, namely, the regulatory history of the insurance industry and the reasonable expectations of the parties. Schieffelin & Co. v. Dept. of Liquor Control, supra, 194 Conn. 180.
As the defendant concedes, the insurance business is heavily regulated. In fact, the insurance industry “is [450]*450impacted by over 1000 statutes in this state, and has been subjected to extensive legislation dating [from] as early as 1833.” Aetna Life & Casualty Co. v. Braceidiferro, 34 Conn. App. 833, 847, 643 A.2d 1305 (1994), cert. granted, 232 Conn. 901, 651 A.2d 743 (1995). The automobile liability insurance business, in particular, is strictly regulated. Wilson v. Security Ins. Co., 213 Conn. 532, 539, 569 A.2d 40, cert. denied, 498 U.S. 814, 111 S. Ct. 52, 112 L. Ed. 2d 28 (1990), cert. denied, 502 U.S. 1005,112 S. Ct. 640, 116 L. Ed. 2d 658 (1991); Simonette v. Great American Ins. Co., 165 Conn. 466, 473, 338 A.2d 453 (1973). For example, since 1967, all automobile liability policies issued in this state have been statutorily required to contain uninsured and underinsured motorist coverage, and the laws governing such mandatory insurance coverage have been subjected to regular legislative review and revision.15 Indeed, several amendments to those statutes have been passed in direct response to decisions of this court. See, e.g., Lowrey v. Valley Forge Ins. Co., 224 Conn. 152, 160, 617 A.2d 454 (1992); Nationwide Ins. Co. v. Gode, 187 Conn. 386, 390-91, 446 A.2d 1059 (1982), overruled in part on other grounds, Covenant Ins. Co. v. Coon, 220 Conn. 30, 36 n.6, 594 A.2d 977 (1991); [451]*451Oliva v. Aetna Casualty & Surety Co., 181 Conn. 37, 41, 434 A.2d 304 (1980). Furthermore, in 1979, the legislature expressly prohibited insurers from limiting the time period for the filing of uninsured and underin-sured motorist claims to less than one year;16 Public Acts 1979, No. 79-235; and, since that date, the minimum limitation period has been extended twice, first from one to two years; Public Acts 1982, No. 82-406; and, more recently, from two years to three years. P. A. 93-77.
In light of the state’s pervasive and longstanding regulation of the insurance industry, the action taken by the legislature to remediate the consequences of our decisions in McGlinchey v. Aetna Casualty & Surety Co., 224 Conn. 133, 617 A.2d 445 (1992), and Hotkowski v. Aetna Life & Casualty Co., 224 Conn. 145, 617 A.2d 451 (1992), was by no means unforeseeable. Indeed, the defendant was cognizant of the fact that, until the publication of McGlinchey and Hotkowski, the enforceability of a two year limitation period for underinsured motorist claims, and the date on which any such period began to run, had been in doubt. See footnote 7. In fact, at least two Superior Court decisions issued prior to McGlinchey and Hotkowski, including one in which the defendant was a party, had struck down, as contrary to public policy, the provisions of an automobile liability policy requiring that a claim for underinsured motorist benefits be commenced within two years from the date of the accident.17 Finally, the defendant was well [452]*452aware both that exhaustion of the liability limits of the tortfeasor’s policy is a necessary precondition to the recovery of underinsured motorist benefits; General Statutes (Rev. to 1989) § 38-175c (b) (1), now revised and recodified as § 38a-336; Continental Ins. Co. v. Cebe-Habersky, 214 Conn. 209, 212-13, 571 A.2d 104 (1990); and that the exhaustion of the tortfeasor’s policy limits can take a considerable amount of time.18 Aetna Life & Casualty Co. v. Braccidiferro, supra, 34 Conn. App. 848.
[453]*453Upon consideration of the relevant factors, we are not persuaded that § 3 of P.A. 93-77 operates as a substantial impairment of the defendant’s contractual rights under article one, § 10, of the federal constitution. In view of the highly regulated nature of the insurance industry and the foreseeability of the legislature’s remedial action,19 the defendant, in order to establish a contractual interference of constitutional magnitude, was required to demonstrate that the challenged legislation gave rise to an impairment of overriding severity. Because the contract modification effected by § 3 of P.A. 93-77 was neither extreme nor extraordinary, the defendant has failed to meet this burden.
Furthermore, even if a contrary conclusion were required, we are satisfied that, because § 3 of P.A. 93-77 properly serves a significant and legitimate public purpose, its enactment was justified as a valid exercise of the state’s police powers. As we have noted, § 3 of P.A. 93-77 was passed in response to our decisions in McGlinchey v. Aetna Casualty & Surety Co., supra, 224 Conn. 133, and Hotkowski v. Aetna Life & Casualty Co., supra, 224 Conn. 145, wherein we upheld policy provisions requiring the filing of a claim for underinsured motorist benefits within two years from the date of the accident.20 Prior to those decisions, there [454]*454was considerable disagreement as to whether an insured could properly file an underinsured motorist claim before ascertaining and exhausting the liability limits of the tortfeasor’s policy.21 Consequently, certain insureds, unable to exhaust the liability limits of the tortfeasor’s policy within the contractual two year period, had delayed filing an underinsured motorist claim until after that period had expired.22 Although [455]*455we made it clear in McGlinchey and Hotkowski that an insured may properly commence an action for underin-sured motorist benefits prior to exhausting the liability limits of the tortfeasor’s policy,23 those insureds who, prior to McGlinchey and Hotkowski, had failed to do so in good faith reliance on an intricate and sometimes confusing24 regulatory scheme were thereafter left without recourse under the policy. Consistent with the broad remedial aim of our laws “to protect and make whole a person injured at the hands of an uninsured/underinsured motorist”; American Universal Ins. Co. v. DelGreco, 205 Conn. 178,197, 530 A.2d 171 (1987); § 3 of P. A. 93-77 was intended to restore to that group of insureds the right to recover the underinsured motorist benefits to which they otherwise would have been entitled had they not failed to file a claim within the two year contractual period.25
In determining whether the challenged legislative action seeks to achieve a legitimate state objective, “courts properly defer to legislative judgment as to the [456]*456necessity and reasonableness of [the] measure.”26 United States Trust Co. v. New Jersey, supra, 431 U.S. 22-23; see also Keystone Bituminous Coal Assn. v. DeBenedictis, supra, 480 U.S. 505. Bearing that standard in mind, we are satisfied that § 3 of P.A. 93-77 was a reasonable response to our holdings in McGlinchey and Hotkowski, which, though mandated by clear statutory and contract language, carried consequences of a severity apparently not foreseen by the legislature. Furthermore, because § 3 is rationally designed to remedy those consequences, the “aim of the [challenged legislative action] is properly targeted.” Schieffelin & Co. v. Dept. of Liquor Control, supra, 194 Conn. 184; see also Energy Reserves Group, Inc. v. Kansas Power & Light Co., supra, 459 U.S. 412; Allied Structural Steel Co. v. Spannaus, supra, 438 U.S. 250. We conclude, therefore, that because § 3 is an appropriate legislative response to an important issue of legitimate public concern, the contractual interference resulting therefrom has been justified by the state as a reasonable exercise of its police powers.27 Accordingly, the defendant has failed to meet its heavy burden of establishing that § 3 of P.A. 93-77 violates the contract clause of the United States constitution.
[457]*457II
The defendant claims, as an alternate ground for affirmance, that § 3 of P.A. 93-77 violates its substantive due process rights guaranteed under the fourteenth amendment to the United States constitution.28 We disagree.
The defendant argues that § 3 of P.A. 93-77 unreasonably interferes with the parties’ transaction because it retrospectively divests the defendant of a right that had been finally determined under the terms of the policy. Although “the mere fact that a statute is retrospective does not itself render it invalid”; Schieffelin & Co. v. Dept. of Liquor Control, supra, 194 Conn. 174; “[retroactive legislation presents problems of unfairness that are more serious than those posed by prospective legislation, because it can deprive citizens of legitimate expectations and upset settled transactions. For this reason, [t]he retroactive aspects of [economic] legislation, as well as the prospective aspects, must meet the test of due process: a legitimate legislative purpose furthered by rational means.”29 (Internal quotation marks omitted.) General Motors Corp. v. Romein, supra, 503 U.S. 191.
In holding that § 3 of P.A. 93-77 passes muster under article one, § 10, of the federal constitution, we explained why the challenged legislation properly [458]*458serves a significant and legitimate public purpose. See part I of this opinion. For those reasons, which need not be repeated here, we are compelled to conclude that § 3 is neither arbitrary nor irrational and, accordingly, that it fully satisfies the requirements of due process.30 The defendant’s claim of a due process violation, therefore, is without merit.
Ill
The defendant also claims, as a second alternate basis for affirmance, that § 3 of P.A. 93-77 violates article first, § 1, of the Connecticut constitution,31 which proscribes legislation intended solely for individual benefit. We do not agree.
We have construed the state constitutional prohibition against exclusive public emoluments or privileges “to apply to legislation preferring certain individuals over others when wholly unrelated to the public interest. No enactment creating a preference can withstand constitutional attack if the sole objective of the [legislature] is to grant personal gain or advantage to an individual. Its validity is contingent, at least in part, upon its furthering a public purpose; if enacted with that end in view, legislation can be sustained even though it may incidentally confer a direct benefit upon an individual [459]*459or a class. . . . Only if an act serves some public purpose can it be constitutionally sufficient. ...” (Citations omitted; internal quotation marks omitted.) Merly v. State, 211 Conn. 199, 212-13, 558 A.2d 977 (1989); see also Chotkowski v. State, 213 Conn. 13, 17-18, 566 A.2d 419 (1989); Tough v. Ives, 162 Conn. 274, 292, 294 A.2d 67 (1972); State ex rel. Higgins v. Civil Service Commission, 139 Conn. 102, 106, 90 A.2d 862 (1952).
We have also previously explained why § 3 of P.A. 93-77, as curative legislation fashioned to mitigate the consequences of our decisions in McGlinchey v. Aetna Casualty & Surety Co., supra, 224 Conn. 133, and Hotkowski v. Aetna Life & Casualty Co., supra, 224 Conn. 145, serves a legitimate and important public purpose. See part I of this opinion. Because the challenged enactment addresses an issue of public rather than solely private concern, the fact that it incidentally confers a benefit on the plaintiff does not render it constitutionally infirm. Merly v. State, supra, 211 Conn. 213; State ex rel. Higgins v. Civil Service Commission, supra, 139 Conn. 106. The defendant, therefore, has failed to establish that § 3 contravenes article first, § 1, of the Connecticut constitution.
IV
We conclude that § 3 of P.A. 93-77 does not violate either the contract or due process clauses of the United States constitution, or article first, § 1, of the Connecticut constitution. Accordingly, the trial court improperly granted the defendant’s motion for summary judgment on the ground that the plaintiff’s action was time barred under the two year limitation period of the policy.
The judgment of the trial court is reversed and the case is remanded for further proceedings consistent with this opinion.
In this opinion the other justices concurred.