Plaintiff-appellant William Mullin sued his employer, defendant-appellee Raytheon Company, contending that his demotion (and a concomitant reduction in remuneration) constituted age discrimination in contravention of both the federal Age Discrimination in Employment Act (ADEA), 29 U.S.C. §§ 621-634, and the Massachusetts Anti-Discrimination Act, Mass. Gen. Laws ch. 151B, § 4(1B), (Chapter 151B). The district court granted Raytheon’s motion for summary judgment on all counts.
See Mullin v. Raytheon Co.,
I. BACKGROUND
Consistent with the summary judgment standard, we recount the material facts in the manner most congenial to the appellant’s theory of the case, accepting his (properly documented) version of genuinely disputed facts and drawing all reasonable inferences in his favor.
See Coyne v. Taber Partners I,
Raytheon assigns salaried employees a labor grade on a numeric scale that ranges from 4 to 18. Each grade corresponds to a different (successively higher) earnings bracket. Prior to filing this action, the appellant worked for Raytheon for some twenty-nine years. He steadily climbed the corporate lattice. In 1979, he achieved a grade of 15 and became manager of manufacturing operations for Raytheon’s Andover (Massachusetts) plant — a position in which he supervised more than 2,000 employees. At that *698 point, his upward progression ceased. Although he retained a grade 15 classification until 1995, his duties changed and his authority gradually contracted. In 1984, Raytheon transferred Mullin to its Lowell (Massachusetts) plant, where he became a second-shift manager, supervising some 400 employees. Beginning in 1989, the company informally assigned him to the role of trouble-shooter and transferred him from area to area, according to need. In 1994, Raytheon designated him as the manager of the Gyro and Motorwind Work Centers at the Lowell plant — a position in which he oversaw fewer than 100 subordinates.
Over the years, Raytheon’s principal business has been the manufacture of military ordnance. When the Cold War ended and Congress slashed the Defense Department’s procurement budget, the volume of work potentially available to Raytheon decreased proportionately. In an effort to adjust to these economic realities, Raytheon inaugurated major structural changes. Among other steps, it closed the Lowell plant and one in Manchester, New Hampshire, and folded the operations previously performed at those locations into its Andover plant. In the process, Raytheon relocated the appellant and his department to Andover.
In addition to plant closings and consolidations, the retrenchment produced a significant number of layoffs and reassignments. It also included a wage freeze, during which Raytheon assayed the commensurability of upper-level salaried employees’ assigned labor grades and actual responsibilities. The company evaluated each position in light of criteria such as the complexity of the work undertaken, the number of employees supervised, and the financial responsibility inherent in the job. In the appellant’s case, it deemed his grade (15) inconsistent with his duties and downgraded him to level 12 — an action that, under established corporate policy, required a downward compensation adjustment to bring him within the salary range that corresponded to his new classification. 1
Claiming that age discrimination prompted this demotion, the appellant sued. His complaint, grounded in both federal question jurisdiction, 28 U.S.C. § 1331, and diversity jurisdiction, 28 U.S.C. § 1332 — Mullin is a citizen of New Hampshire and Raytheon is a Delaware corporation with its principal place of business in Massachusetts' — set out four statements of claim: two for disparate treatment (one under the ADEA and one under Chapter 151B) and two for disparate impact (one under the ADEA and one under Chapter 151B). After a period of discovery, Ray-theon moved for brevis disposition and the district court obliged. See Mullin, 2 F.Supp.2d at 175. This appeal ensued.
II. ANALYSIS
Summary judgment is a device that “has proven its usefulness as a means of avoiding full-dress trials in unwinnable cases, thereby freeing courts to utilize scarce judicial resources in more beneficial ways.”
Mesnick v. General Elec. Co.,
With this brief preface, we turn to the appellant’s asseverational array. In the process, we review the lower court’s decision de novo.
See Garside,
*699 A. Disparate Treatment — ADEA and Chapter 1S1B Claims.
The tripartite burden-shifting regime conceived by the Supreme Court for use in Title VII cases,
see St. Mary’s Honor Ctr. v. Hicks,
For purposes of Mullin’s ADEA-based disparate treatment claim, we must therefore concentrate on whether he adduced enough evidence to create a trialworthy question both as to the employer’s alleged motivation (animus based on age) and as to the pretextuality of its explanation for the adverse employment action.
See Mesnick,
The appellant’s burden under Chapter 151B is somewhat less onerous. While federal law requires a showing of pretext plus age animus, the Massachusetts courts appear, at the third step of the pavane, to require a claimant to show only pretext.
See Blare v. Husky Injection Molding Sys. Boston, Inc.,
We need not tarry. Raytheon advanced a strong, objectively verifiable set of reasons for consolidating operations, restructuring its work force, and downgrading Mul-lin: significant revenue loss stemming from massive Defense Department cutbacks, culminating in a reevaluation of all upper-echelon salaried employees. The appellant points to nothing that casts doubt upon the legitimacy of this reason, nor does he proffer any substantial evidence that would permit a rational jury to find that Raytheon rigged the restructuring in a fashion designed to ensure that the appellant’s labor grade and/or compensation level would be reduced unfairly. The district court painstakingly analyzed all the appellant’s submissions in this regard,
see id.
at 169-71, and it would be pleonastic to rehearse that discussion here.- We content ourselves with saying that, after having carefully sifted the record, we uphold the lower court’s disposition of the disparate treatment claims for essentially the reasons elucidated in its rescript.
See Lawton v. State Mut. Life Assur. Co. of Am.,
B. Disparate Impact — ADEA.
The linchpin of a disparate treatment claim is proof of the employer’s discriminatory motive.
See International Bhd. of Teamsters v. United States,
We begin by focusing on the statutory language.
See Landreth Timber Co. v. Landreth,
Congress enacted the ADEA in 1967. Pri- or to 1993, several courts ruled that the ADEA permitted the maintenance of disparate impact claims.
See, e.g., Finnegan v. Trans World Airlines, Inc.,
Writing for a unanimous Court in
Hazen Paper,
Justice O’Connor declared that “[disparate treatment ... captures the essence of what Congress sought to prohibit in the ADEA.”
Id.
at 610,
This analysis is telling. Since disparate impact claims encompass the precise scenario that Justice O’Connor describes — disparate impact assigns liability when employment
*701
practices
are
grounded in factors other than the statutorily protected characteristic (say, age), yet fall more harshly on individuals within the protected group (say, older persons) — the inescapable implication of her statements is that the imposition of disparate impact liability would not address the evils that Congress was attempting to purge when it enacted the ADEA. Equally as important, Justice O’Connor’s exposition of the purposes underpinning the ADEA sets that statute apart from Title VII (and, thus, effectively distinguishes Griggs). Congress enacted Title VII in an effort to equalize employment opportunities for individuals whose employment prospects had been dimmed by past discriminatory practices.
See Griggs,
By contrast, age-based discrimination correlates with contemporaneous employment-related conditions, not past discriminatory practices.
See Hazen Paper,
The concurring opinion in
Hazen Paper
lends further support to this conclusion. In it, Justice Kennedy wrote for himself and two other Justices to underscore that “nothing in the Court’s opinion should be read as incorporating in the ADEA context the so-called ‘disparate impact’ theory of Title VII.”
Hazen Paper,
Other courts also find the arguments to which Justice Kennedy referred compelling. Since 1993, a majority of the courts of appeals that have addressed the question have held that the ADEA does not recognize causes of action premised on disparate impact.
See Ellis,
Three additional considerations persuade us that the majority view is correct, that Hazen Paper foretells the future, that Griggs is inapposite in the ADEA context, and that proof of intentional discrimination is a prerequisite to liability under the ADEA. We touch briefly on each consideration.
1.
Text and Structure.
A critical asymmetry in the texts of the ADEA and Title VII counsels convincingly against recognizing a disparate impact cause of action under the former statute. The ADEA stipulates that “[ijt shall not be unlawful for an employer ... to take any action otherwise prohibited ... where the differentiation is based on
*702
reasonable factors other than age.” 29 U.S.C. § 623(f)(1). This proviso permits employers to utilize factors other than age as grounds for employment-related decisions that differentially impact members of the protected class (individuals between the ages of 40 and 69). When this exception is read with the ADEA’s general prohibition against age-based discrimination, the resulting construction follows: it shall be unlawful to “discriminate against any individual ... because of such individual’s age,” except when “based on ... factors other than age.” Thus, if the exception contained in section 623(f)(1) is not understood to preclude disparate impact liability, it becomes nothing more than a bromide to the effect that “only age discrimination is age discrimination.” Such a circular construction would fly in the teeth of the well-settled canon that “[a]ll words and provisions of statutes are intended to have meaning and are to be given effect, and no construction should be adopted which would render statutory words or phrases meaningless, redundant or superfluous.”
United States v. Ven-Fuel, Inc.,
The Supreme Court’s treatment of similar language in the Equal Pay Act is instructive on this front. In
County of Washington v. Gunther,
For analytic purposes, the Court juxtaposed this limitation on Equal Pay Act liability with Title VII’s broadly inclusive prohibition against gender-based discrimination and commented that the limiting language worked to “confine the application of the Act to wage differentials attributable to sex discrimination.”
Gunther,
We believe that the exception found in ADEA § 623(f)(1) effects a similar limitation on the type of claims that are permitted under the ADEA, and that any alternative conclusion would be untenable. When the ADEA’s general prohibition and the statutory exception are read in pari materia, as a unified whole, the prohibition forbids disparate treatment based on age and the exception authorizes disparate impact. Thus, Professor Laycock’s commentary, made in the Equal Pay Act context, applies equally to the ADEA: “The prohibition and the exception appear identical. The sentence is incomprehensible unless the prohibition forbids disparate treatment and the exception authorizes disparate impact.” Douglas Laycock, Continuing Violations, Disparate Impact in Compensation, and Other Title VII Issues, 49 L. & Contemp. Prob. 53, 55 (1986). 5
2.
Legislative History.
The legislative history of the ADEA provides added support for interpreting it independent of Title VII in regard to disparate impact claims. When enacted, Title VII included a provision requiring the Secretary of Labor to conduct a
*703
detailed study on the causes and effects of age discrimination.
See
Pub.L. No. 88-352, § 715, 78 Stat. 265 (1964). The resulting report, entitled
The Older American Worker: Age Discrimination in Employment
(1965) ( the Report), served as a principal impetus for the ADEA.
See Ellis,
The Report also distinguished between “arbitrary discrimination” based on age (disparate treatment) and other institutional arrangements that have a disproportionate effect on older workers (disparate impact). Report at 21-25. It recommended that arbitrary discrimination be statutorily prohibited, but that systemic disadvantages incidentally afflicting older workers be addressed through educational programs and institutional restructuring.
See id.; see also Ellis,
3.
The 1991 Amendments.
The third factor that persuades us not to emulate the
G?iggs
approach to Title VII in the ADEA context concerns more- recent legislative developments. In 1991, Congress amended Title VII to provide explicitly for causes of action based upon disparate impact.
See
Pub.L. No. 102-166, § 105, 105 Stat. 1071, 1074-75 (1991). It simultaneously amended the ADEA in myriad respects,
see, e.g., id.
at § 115,
We are mindful that courts ordinarily should tread slowly in premising statutory construction on the action (or inaction) of subsequent Congresses.
See Schneidewind v. ANR Pipeline Co.,
In sum, we have largely
analogous
statutes that diverge structurally on a discrete but important point. Coupled with the other factors we have discussed, this divergence helps to persuade us that Congress never intended to make a disparate impact cause of action available under the ADEA. We fully agree with the Sixth Circuit’s assessment: “The ADEA was not intended to protect older workers from the often harsh economic realities of common business decisions and the hardships associated with corporate reorganizations, downsizing, plant closings and relo-cations.”
Allen v. Diebold, Inc.,
To say more on this point would be supererogatory. For the foregoing reasons, we join those courts of appeals which have held that *704 the ADEA does not impose liability under a theory of disparate impact. We therefore affirm the district court’s entry of summary judgment for Raytheon on the appellant’s federal disparate impact claim.
C. Disparate Impact — Chapter 151B.
We are left with the appellant’s state-law disparate impact claim. The able district judge noted that Massachusetts has yet to determine whether disparate impact is actionable in age discrimination cases, but disposed of the claim on another ground.
See Mullin,
The appellant disagrees that the viability of disparate impact theory in age discrimination cases remains unsettled under state law. He notes that Massachusetts outlaws many types of discrimination by means of a single, comprehensive statute (Chapter 151B) and that the Massachusetts Supreme Judicial Court (SJC) has recognized a disparate impact cause of action with respect to one group protected by that statute.
See Cox v. New Engl. Tel. & Tel. Co.,
Although this construct possesses a certain superficial appeal, it cannot withstand scrutiny. Chapter 151B is divided into several sections and subsections, and the structure of the statutory scheme itself suggests that separate provisions within Chapter 151B are to be interpreted independently. Age, for example, is treated separately within the Chapter 151B taxonomy. See Mass. Gen. Laws ch. 151B, § 4(1B). 6 This is especially significant because, when the legislature amended Chapter 151B in 1984, it moved age (which previously had been grouped alongside race, color, religion, national origin, sex and ancestry) from within the compass of section 4(1) and placed it in a separate, newly crafted statutory niche, section 4(1B). 7 See An Act Relative to the Dismissal of Certain Persons from Employment or the Refusal to Employ Such Persons Due to Age, 1984 Mass. Acts 631, 632-33. This structural redesign constitutes potent evidence that the legislature meant the two provisions to be distinct and interpreted independently of one another. Were this not so, there would have been no need to split section 4(1) in two.
The appellant’s hypothesis that the Massachusetts courts have cleared disparate impact for use in all instances arising under Chapter 151B (including age discrimination) is flawed in another respect as well; it not only overlooks the structure of the statutory scheme, but also misreads the case law. As stated, the hypothesis rests upon three SJC decisions. One is Cox, to which we soon shall return. Neither of the other two is persuasive authority on the point.
School Comm. of Braintree v. MCAD,
The appellant’s next case,
Lynn Teachers Union v. MCAD,
Against this backdrop, we find the approach taken by the SJC in
Cox
to be instructive.
Cox
dealt with Chapter 151B in the context of a handicap discrimination claim. Like age discrimination, handicap discrimination is governed by a separate provision within Chapter 151B.
See supra
note 6. Recognizing that
Cox
presented a question of first impression, the SJC stated that it would look for guidance to the federal courts’ treatment of handicap discrimination under section 504 of the Rehabilitation Act of 1973, 29 U.S.C. § 794.
See Cox,
414 Mass, at 382,
Cox
epitomizes the SJC’s general approach in such matters,
see, e.g., White v. University of Mass, at Boston,
We rule, therefore, that
Cox,
fairly read, does not justify an inference that the SJC, by recognizing disparate impact claims in terms of handicap discrimination, intended to transplant the theory into the age discrimination milieu. It follows that the SJC has not yet staked out a position in regard to the viability of age discrimination claims grounded in disparate impact. Because state law is inscrutable in this regard,
8
“it becomes our duty to vaticinate how the state’s highest tribunal would resolve matters.”
Moores v. Greenberg,
Here, we adopt the Cox court’s approach. The Massachusetts age discrimination prohibition and the federal age discrimination prohibition are substantially identical, compare Mass. Gen. Laws, eh. 151B, § 4(1B), unth 29 *706 U.S.C. § 623(a)(1), and, as said, the public policy concerns implicated by age discrimination are distinct from the concerns created by other forms of discrimination. Under these circumstances, we conclude that, when faced with the question, the SJC likely will look to the federal courts’ interpretation of the ÁDEA and hold that an age discrimination claim cannot be grounded solely on a theory of disparate impact. Accordingly, we sustain the district court’s rejection of the appellant’s remaining claim. 9
III. CONCLUSION
We need go no further. Concluding, as we do, that the lower court appropriately granted summary judgment in Raytheon’s favor on all four of Mullin’s statements of claim, we affirm the judgment below'.
Affirmed.
Notes
. Raytheon phased in the pay cut, reducing the appellant's salary by 10% in October 1995, and scheduling another 10% reduction to take place six months thereafter. The second cut never materialized because Mullin took a medical leave.
. This conclusion assumes, favorably to the appellant, that
Blare
remains good law.
But cf. McMillan
v.
Massachusetts Soc’y for the Prevention of Cruelty to Animals,
. Tille VII makes it unlawful for an employer:
(1) to fail or refuse to hire or to discharge any individual, or otherwise to discriminate against any individual with respect to his compensation, terms, conditions, or privileges of employment, because of such individual’s race, color, religion, sex or national origin; or (2) to limit, segregate, or classify his employees or applicants for employment in any way which would deprive or tend to deprive any individual of employment opportunities or otherwise adversely affect his status as an employee, because of such individual’s race, color, religion, sex, or national origin.
42 U.S.C. § 2000e-2(a)(l)-(2).
. In
Mangold v. California Pub. Util. Comm’n,
. We hasten to add that, since Title VII contains no comparable exception, this difference in the statutory schemes further distinguishes Griggs.
. So, too, is handicap discrimination. See Mass. Gen. Laws ch. 151B, § 4(16). This fact tends to limit the long reach that the appellant attaches to Cox.
. In pertinent part, the amended version of section 4(1) prohibits discrimination by a private-sector employer "in compensation or in terms, conditions or privileges of employment” on account "of the race, color, religious creed, national origin, sex, sexual orientation, ... or ancestry of any individual,” subject, however, to an exception for actions "based upon a bona fide occupational qualification.” In contrast, section 4(1 B) prohibits such employers from discriminating "in compensation or. in terms, conditions or privileges of employment,” on account "of the age of any individual,” unless the employer’s action is "based upon a bona fide occupational qualification.”
. We have researched the reported decisions of the Massachusetts Appeals Court and find them unhelpful on the question.
. We may, perhaps, be conservative in our interpretation of state law, but the plaintiff, who chose to prosecute a state-law cause of action in a federal forum, had no right to anticipate that we would be more adventurous.
See, e.g., Porter v. Nutter,
