On August 14, 1981, appellants Ellis and Phyllis Lovgren amended their pending cause of action to include as a defendant Peoples Electric Company, Inc., respondent. Peoples Electric moved for summary judgment on September 24, 1984. The Hennepin County District Court granted the motion and dismissed the suit on November 7, 1984. The Lovgrens appealed to the Minnesota Court of Appeals, which affirmed the district court dismissal on May 21, 1985,
Lovgren v. Peoples Electric Co., Inc.,
On September 9, 1975, appellant Ellis Lovgren, a 48-year-old electrician for North Star Steel Company, received a high voltage electrical shock when he touched a tension bus bar in a transformer vault on his employer’s premises. The electrical shock caused permanent burns, heart damage and the eventual amputation of Lovgren’s left arm.
Lovgren did not begin a personal injury action until more than 2 years and 7 months had elapsed. The statute of limitations then in effect for personal injury claims arising out of defective or unsafe improvements to real property was 2 years from discovery. Minn.Stat. § 541.051 (1976). In
Pacific Indemnity Co. v. Thompson-Yaeger, Inc.,
On April 24, 1978, Ellis and Phyllis Lovgren began a personal injury suit against Northern States Power Company. The Lovgrens amended their complaint on August 14, 1981, in order to bring in several other defendants, including respondent Peoples Electric Company upon which they served a summons and complaint. 2 Peoples Electric had installed the transformer vault and, with the other defendants, was sued by Lovgren on negligence and strict liability grounds. On October 14, 1981, Peoples Electric filed an answer denying the allegations and affirmatively alleging, inter alia, that the suit was barred by laches and that the applicable statute of limitations had run. Peoples Electric also filed cross-claims. The other defendants, however, were subsequently dismissed by Lovgren, and Peoples Electric, as a third-party plaintiff, dismissed all claims.
Peoples Electric moved for summary judgment, which the Hennepin County Dis *794 trict Court granted on September 24, 1984, and entered judgment pursuant to the order on November 7, 1984. The court ruled that Lovgren's claim against Peoples Electric was barred by the current section 541.-051 and dismissed the case with prejudice and costs. Finding that the cause of action accrued during the “hiatus period” between Pacific Indemnity and the re-enactment of section 541.051 in 1980, the court held that the statute of limitations would be retroactively applied since that was the intent of the legislature as expressed in the delay period between the date of the statute’s enactment and the effective date. 3 Lovgren appealed to the Minnesota Court of Appeals on December 19, 1984.
The court of appeals affirmed the district court dismissal on May 21, 1985.
Lovgren v. Peoples Electric Co.,
Lovgren’s petition for further review was granted by this court on July 26, 1985.
The original issues raised on appeal were:
I.Does the transformer vault qualify as an “improvement to real property” under Minn.Stat. § 541.051?
II.When did Lovgren’s cause of action accrue?
III.Was the court of appeals correct in holding that Minn.Stat. § 541.051 bars Lovgren’s cause of action?
The main issue in this case is whether MinmStat. § 541.051 (1984) bars Lovgren’s suit. 5 At oral argument, the *795 parties, through their counsel, greatly simplified the original issues. Counsel for Peoples Electric stated that its appeal would not be based on the theory that the 1976 version of section 541.051, although ruled unconstitutional in Pacific Indemnity, nonetheless, served to bar Lovgren’s cause of action. 6 Therefore, we need only to discuss at length the retroactive application of the current section 541.051 to Lovgren’s claim. In addition, counsel for Lovgren concedes that the cause of action accrued at the time of injury. Thus, whatever statute of limitations applies, it began to run as of September 9, 1975.
Therefore, the only issue left to be decided by this court is whether the current section 541.051 should be retroactively applied or whether Lovgren’s cause of action is governed by the general 6-year statute of limitations for tort causes of action in Minn.Stat. § 541.05, subd. 1(5) (1984). If the current statute were to be retroactively applied, Lovgren’s claim would be barred as of September 9, 1977. However, we find that we have no grounds for inferring that the legislature intended the retroactive application of the current section 541.051 to claims existing when it was enacted in 1980. We hold that Lovgren’s claim was governed by the general 6-year period. Since Lovgren brought suit against Peoples Electric within 6 years of accrual, we reverse the court of appeals and the district court and remand the case for trial.
Minn.Stat. § 645.21 provides: “No law shall be construed to be retroactive unless clearly and manifestly so intended by the legislature.” To apply the current section 541.051 2-year statute of limitations to claims existing in 1980 under a 6-year statute of limitations is clearly the retroactive application of the law. Furthermore, as this court has stated: “Generally, it is immaterial whether a law alters procedural or substantive rights; the legislature must still express its intention to make it retroactive.”
In re Estate of Murphy v. State Department of Public Welfare,
The 115-day delay occurred because section 541.051 contained no effective date when enacted on April 7, 1980. Without an express effective date, the statute became law on August 1, the uniform enactment date for all legislation not containing an express date. 8
We hold that the 115-day delay period is not sufficient evidence of a clear and manifest legislative intent that section 541.-051 be applied retroactively. In prior cases where the court has found sufficient evidence of the requisite legislative intent, there have been provisions in the statute clearly providing for retroactive application or, at least, a delayed enactment date has been explicitly included in the provisions of the statute.
See, e.g., Viereck v. Peoples Savings and Loan Ass’n,
Therefore, we hold that, following our decision in Pacific Indemnity, the 6-year statute of limitations applies to suits such as Lovgren’s that existed prior to August 1, 1980, and that the 1980 amendment applies only to causes of action arising after August 1, 1980.
The court of appeals and the trial court are reversed and the case is remanded.
Notes
. The court ruled section 541.051 unconstitutional on equal protection grounds, finding that the distinction caused by the statute between the classes of defendants afforded protection was without a rational basis.
Pacific Indemnity,
. The other defendants were Gamma Engineering, Ltd.; Ferraco Engineering, Inc.; and Westinghouse Electric Co. Northern States Power Company impleaded North Star Steel Company, but the third-party claim was later settled.
. The court did not state on what grounds it found that the cause of action accrued in the “hiatus period" between Pacific Indemnity and the enactment of the current section 541.051 instead of accruing at the time of the accident. Furthermore, the court made no finding of fact concerning exactly when, during this period, the cause of action accrued.
. On October 29, 1985, the court of appeals reversed itself concerning the retroactive application of the current section 541.051 in
Lee v. Industrial Electric Co.,
We found a difference between statutes of limitations and substantive statutes in Lovgren v. Peoples Electric Co.,368 N.W.2d 16 (Minn.Ct.App.1985), pet. for rev. granted (Minn. July 26, 1985). The resolution of the issue of retroactive application of § 541.051 in Lovgren was neither involved with, nor necessary to, the resolution of that case. We consider that portion of the decision to be obiter dictum and therefore of no precedential value.
Lee,
.Preliminary to the main issue is whether Lovgren’s cause of action qualifies as an injury arising out of an improvement to real property as the term is used in section 541.051. While the issue was not raised in the district court and has not been briefed by the parties, it was raised *795 before and addressed by the court of appeals. Section 541.051, subdivision 1 provides:
Except where fraud is involved, no action by any person in * * * tort * * * to recover damages * * * for bodily injury * * * arising out of the defective and unsafe condition of an improvement to real property * * * shall be brought against any person performing or furnishing the design, planning, supervision, materials, or observation of construction or construction of the improvement to real property * * * more than two years after the discovery thereof * * *.
Id.
Focusing on the nature of the transformer vault, the court of appeals found that the vault was a permanent addition to the factory that enhanced the value of the property and, thus, an "improvement to real property” as defined by this court.
Lovgren,
. Once a statute is found unconstitutional, we have held it to be void ab initio.
See McGuire v. C & L Restaurant, Inc.,
. In
Wichelmen v. Messner,
. Minn.Stat. § 645.02 (1984) was passed in order to set a uniform effective date for all legislation without specific effective dates: "Each act, except one making appropriations, enacted finally at any session of the legislature takes effect on August 1 next following its final enactment, unless a different date is specified in the act.”
