OPINION
This appeal is from a divorce decree. Jim D. Rice and Diana Lee Rice were married in 1976. Prior to and throughout the marriage, Jim was employed by the City of Fairbanks Fire Department. One of his employment benefits includes enrollment in the Public Employees’ Retirement System (PERS).
The trial court treated the retirement fund as a marital asset, divided it in half as of the date of divorce and entered a Qualified Domestic Relations Order (QDRO) to pay one-half of the retirement benefits to Diana when Jim either resigns, is terminated or becomes deceased. Jim appeals the division of his retirement account by the use of a QDRO. Dianne cross-appeals the trial court’s valuation of the Rice fox fur farm. We affirm.
DISCUSSION
We first observe that “accrued benefits” of the PERS enjoy constitutional protection. Article XII, § 7 of the Alaska Constitution provides that those benefits “shall not be diminished or impaired.” This appeal raises the issue whether dividing a *61 PERS account by use of a QDRO unconstitutionally diminishes or impairs Jim’s benefits.
A. RETROACTIVE APPLICATION OF AS 39.35.500.
In 1986 the legislature enacted House Bill 237 which consisted of several amendments to the PERS implementing protections for non-employee spouses. See generally ch. 117, §§ 32-54, SLA 1986; Governor’s Transmittal Letter to H.B. 237, 1 House Journal 437 (1985). See, e.g., AS 39.35.450, .455, .490, .500, .680. The amendments took effect in January 1987, after Diana filed for divorce but before it was granted. The key amendment upon which Jim bases this appeal creates a narrow exception to the statutory prohibition against the assignability of retirement benefits. See AS 39.35.500. The amendment permits retirement benefits to be assigned pursuant to a QDRO. Id.
Jim first argues that implied retroactive changes to PERS are specifically prohibited. AS 39.35.547. 1 He contends that a statute is not retroactive unless it expressly says so. AS 01.10.090; AS 01.10.100. 2 Thus, he concludes that because the amendment to AS 39.35.500 does not explicitly provide that prior vested benefits may be assigned and because such an assignment diminishes and impairs his benefits, the trial court erred in assigning his benefits via the QDRO. Diana responds that the amendment to AS 39.35.500 merely effects a procedural change in the law. She argues restrictions against retroactive application of statutes are inapplicable when the change in the law is procedural.
We have repeatedly held that to the extent retirement benefits have been earned during the marriage, they constitute marital assets and are subject to equitable division.
See Laing v. Laing,
Procedural changes in the law which do not affect substantive rights may be applied retroactively.
Herning
v.
Eason,
B. DIMINISHMENT OR IMPAIRMENT OF BENEFITS.
Jim also contends that distributing his PERS account pursuant to a QDRO unconstitutionally operates to his disadvantage and must be offset by comparable new advantages to him.
See
Alaska Const. art. XII, § 7;
Sheffield v. Alaska Public Employees Ass’n,
C. FOX FUR FARM VALUATION
Diana’s cross-appeal concerns the trial court’s valuation of the Rice fox fur farm. Diana argues that the trial court underestimated the fox farm’s value. She claims it is worth $63,000 while the trial court found: “[a]fter reducing [the farm’s] net value by the amount of the indebtedness due Alaska Renewal Resources, the court finds that the fox farm has a negligible value.” A trial court’s valuation of marital property is a factual determination.
Julsen v. Julsen,
CONCLUSION
The decision of the trial court is AFFIRMED.
Notes
. AS 39.35.547(a) provides:
An amendment of this chapter is not retroactive unless its retroactivity is expressly stated in the amendment.
. AS 01.10.090 provides:
No statute is retrospective unless expressly declared therein.
AS 01.10.100 provides in part:
(a) The repeal or amendment of any law does not release or extinguish any penalty, forfeiture, or liability incurred or right accruing or accrued under such law, unless the repealing or amending act so provides expressly.
. For example, in
Sheffield v. Alaska Public Employees Ass’n,
