ers, however, argue that the 1983 amendment to the Act, which granted them immunity for gross negligence, should be applied to the facts of this case, even though this cause of action arose three years earlier. The trial court apparently accepted this argument.
It is a long-standing rule of statutory construction that a legislative enactment which alters the substantive law or affects vested rights will not be read to operate retrospectively unless the legislature has clearly expressed that intention. See, e.g., Schultz v. Conger, 755 P.2d 165, 166 (Utah 1988); Stephens v. Henderson, 741 P.2d 952, 953-54 (Utah 1987); Pilcher v. State, 663 P.2d 450, 455 (Utah 1983); Department of Social Servs. v. Higgs, 656 P.2d 998, 1000 (Utah 1982); Union Pac. R.R. v. Trustees, Inc., 8 Utah 2d 101, 104, 329 P.2d 398, 399 (1958); McCarrey v. State Teachers’ Retirement Bd., 111 Utah 251, 253, 177 P.2d 725, 726 (1947); In re Ingraham’s Estate, 106 Utah 337, 339, 148 P.2d 340, 341-42 (1944); Farrel v. Pingree, 5 Utah 443, 448, 16 P. 843, 845 (1888). That rule of construction has been codified in section 68-3-3 of the Code. See Stephens, 741 P.2d at 953-54; Utah Code Ann. § 68-3-3 (1986). The Commissioners cannot claim that the 1983 amendment contains the necessary expression of legislative intent for retrospective application.
The .commissioners do claim, however, that the amendment should be applied retroactively because it changes procedural rather than substantive rights. This Court does recognize such an exception to the general rule against retrospective application. See, e.g., Pilcher v. State, 663 P.2d at 455; Foil v. Ballinger, 601 P.2d at 151. But we do not agree that the amendment was procedural.
The amendment at issue deleted the provision making employees personally liable for gross negligence which had been contained in section 63-30-4 of the Code. Compare Utah Code Ann. § 63-30-4 (Supp.1979) with id. (Supp.1983). Deletion of that provision operated to eliminate the Commissioners’ liability as individuals, and it was already too late to file the notice required to sue the State. See Madsen I, 658 P.2d at 628, 630, 632. Thus, retroactive application of the 1983 version of the statute would deprive the investors of any grounds for recovery. Such elimination of an accrued cause of action is clearly a change in the substantive law which affects vested rights. Therefore, we conclude that the 1983 amendment should be applied prospectively only and that it cannot support the trial court’s finding of immunity.
Finally, we consider the investors’ challenge to the last ground given by the trial court in support of the summary judgment — that the suit was time-barred by any of three potentially applicable statutes of limitation, sections 78-12-26(4), -28(1), and -29(2) of the Code.13 Utah Code Ann. §§ 78-12-26(4), -28(1) (1987); id. § 78-12-29(2) (Supp.1988). The investors argue that no matter which of these provisions applies, section 78-12-40 of the
13
The three statutes of limitations cited by the parties provide as follows: Utah Code Ann. § 78-12-26(4) (1987). Utah Code Ann. § 78-12-28(1) (1987). Utah Code Ann. § 78-12-29(2) (Supp.1988).