Thurmаn Berry appeals from a decision of the Appellate Division of the Workers’ Compensation Commission, which affirmed the Commissioner’s decision that, pursuant to 39 M.R.S.A. § 62-B (1989), 1 the employer’s insurer was entitled to reduce Berry’s workers’ compensation benefits by an amount equal to fifty percеnt of his social security retirement benefits. Berry argues that (1) the application of section 62-B violates the Equal Protection Clause of the Maine and federal constitutions and (2) the employer’s insurer is not entitled to the entire offset because one of the injuries responsible fоr his incapacity occurred before the effective date of section 62-B. We disagree and affirm the decision of the Commission.
Thurman Berry worked in the lobster business for H.R. Beal & Sons fоr about twenty years. In June 1977, he suffered a significant work-related injury to his lower back. Fireman’s Fund Insurance Company *1102 was the workers’ compensation insurer for H.R. Beal & Sons at the time.
In 1983, at the age of sixty-three, Berry retired and began receiving social security retirement benefits. Because these benefits were not “enough to keep [him] going,” he later returnеd to work at H.R. Beal & Sons for about five hours per day. In August 1990, Berry suffered a second work-related back injury resulting in his total incapacity. At the time of this sеcond injury Commercial Union Insurance Company was the workers’ compensation insurer for H.R. Beal & Sons, and Berry was collecting $114 per weеk in social security retirement benefits in addition to wages of $274 per week.
In September 1990, H.R. Beal & Sons and Commercial Union filed a petition for apportionment alleging that the June 1977 injury was partially responsible for Berry’s total incapacity. By agreement of the parties, the Commissioner was also аsked to determine the extent to which the responsible insurer could offset Berry’s social security benefits pursuant to 39 M.R.S.A. § 62-B.
The Commissioner granted the petition for apportionment, finding that the 1977 and 1990 injuries were each fifty percent responsible for Berry’s incapacity, concluded that Bеrry’s workers’ compensation benefits were subject to the entire offset provided for in section 62-B, and deducted $57 from his weekly compensation award. Berry’s appeal to the Appellate Division was denied, and we granted his petition for review.
I. Equal Protection 2
Every act of the Legislature is presumed to be constitutional.
Brann v. State,
Title 39 M.R.S.A. § 62-B provides in pertinent part as follows:
3. Coordinаtion of benefits. Benefit payments subject to this section shall be reduced in accordance with the following provisions.
A. The employer’s оbligation to pay weekly compensation under section 54-B or 55-B shall be reduced by:
(1) Fifty percent of the amount of old age insurance benefits received or being received under the United States Social Security Act....
Berry correctly points out that one purpose of sеction 62-B is to prevent the stacking of benefits, meaning that an injured worker who retires should not receive workers’ compensation and soсial security benefits which when combined exceed his previous working income. See L.D. 1062, Statement of Fact (112th Legis. 1985). 3 Because he was already receiving social security when injured and because workers’ compensation benefits are always a fraction of pre-injury wages, Berry asserts that it was impossible for his рost-injury benefits to exceed his pre-injury income. He therefore concludes that section 62-B violates the Equal Protection Clause in this cаse because it is “not rationally related to an otherwise legitimate State purpose.” Stated another way, he contends *1103 that it is a violation of the Equal Protection Clause to apply section 62-B to people who are receiving social security benefits at the time of their injury. We disagree.
As an initial matter, the Legislature had at least
two
goals in mind when it enacted section 62-B: (1) to coordinate benefits or to prevent the stacking of benefits,
see Casey v. Town of Portage Lake,
Wе also reject Berry’s contention that the Legislature did not intend for the offset to apply to employees who were already reсeiving social security at the time of their com-pensable injury. Section 62-B explicitly provides that the employer’s obligation to pay wеekly compensation shall be reduced by fifty percent of social security benefits “received or being received." 39 M.R.S.A. § 62-B(3)(A)(1) (emphasis added). See also Leo v. Danco/D & W Constr. Co., W.C.C.App.Div. 231, 234 (Me.1993) (section 62-B specifiсally applies to social security benefits that are received “before or after an injury”).
II. Proration of the Offset
The Commissioner found, and the parties do not dispute, that the 1977 and 1990 injuries were equally responsible for Berry’s total incapacity. Although section 62-B applies “only as to injuries occurring on and after” June 30, 1985, 4 the Commissioner ruled that Berry’s workers’ compensation benefits ($207.43) were subject to the entire offset. Berry argues that the Commissioner should only have allowed H.R. Beal & Sons or its insurer to take half of the offset provided for in section 62-B. H.R. Beal & Sons responds that the statute doеs not provide for the proration of offsets. This we need not decide.
Because the social security offset of $57 (50% of $114) is less than the workers’ compensation benefit allocable to the second injury (50% of $207.43), the Commission was correct in authorizing the entire offset. 5
The entry is:
The decision of the Appellate Division is affirmed.
All concurring.
Notes
. 39 M.R.S.A. § 62-B (1989) was repealed and replaced by P.L.1991, ch. 885, § A-7 (effective January 1, 1993), and codified as 39-A M.R.S.A. § 221 (Supp.1993). Because the proceeding was pending on the effeсtive date of Title 39-A, this appeal is governed exclusively by former Title 39.
Riley v. Bath Iron Works,
. The denial of equal protection of the laws is proscribed by Me. Const., art. 1, § 6-A, and by U.S. Const., amend. XIV, § 1. "The restrictions imposed by the Maine Constitution are no more stringent than those created by the federal Constitution.”
Beaulieu v. City of Lewiston,
. Although L.D. 1062 was not enacted, it contained the social security offset provision which the Legislature eventually passed. Compare L.D. 1062, § 13 (112th Legis. 1985) with L.D. 1634, § 26 (112th Legis.1985).
.
See
P.L.1985, ch. 372, part A;
see also Rickett v. William Underwood Co.,
. We express no opinion as to the rеsult if the social security offset exceeded the workers' compensation benefit allocable to "injuries occurring on or after” June 30, 1985. 39 M.R.S.A. § 62-B (1989).