Whether the ADEA prohibits an employer from favoring older employees over relatively younger employees when both groups are at least 40 years old.
Holding
No. The ADEA prohibits discrimination that favors relatively younger workers over relatively older workers; it does not bar an employer from favoring older workers over younger members of the protected class.
Reasoning
The statutory phrase barring discrimination "because of such individual's age," considered in isolation, could be read broadly. But the Court read the phrase in its full statutory setting and concluded that its ordinary idiomatic meaning in the ADEA refers to discrimination against older people. Congress used the Act to address the familiar problem of employers preferring youth over age, not the reverse.
The ADEA's origins confirmed that reading. The Secretary of Labor's Wirtz Report, the ensuing congressional hearings, and the statute's findings repeatedly identified barriers faced by older workers: arbitrary assumptions that age reduces competence, age ceilings in hiring, greater pension and insurance costs, and the difficulty older workers face in retaining or regaining employment. Nothing in that record identified a corresponding social problem of younger workers being disadvantaged in favor of older workers.
The Act's structure reinforced the conclusion. The ADEA protects workers beginning at age 40, a threshold chosen because Congress found that age discrimination becomes evident around that point. That cutoff makes sense as protection against preferences for workers who are younger, including workers under 40; it makes far less sense as a general ban on favoring older workers, since the Act would leave still-younger workers entirely unprotected from that same supposed injury.
Prior Supreme Court cases had consistently described the essence of age discrimination as adverse treatment of an older employee because of age-linked stereotypes, such as assumptions that productivity or competence declines with advancing years. The lower federal courts had likewise almost uniformly understood the ADEA to prohibit preferences for younger workers over older ones. Congress's failure to upset that longstanding interpretation, despite amending other ADEA rules, supported retaining it.
The Court rejected the employees' argument that "age" must have one identical meaning throughout the ADEA. Context can give the same word different meanings in different provisions. In the core antidiscrimination provision, "age" operates within the phrase "discrimination ... because of age," which the Court read as referring to old age relative to youth. In provisions recognizing a bona fide occupational qualification or regulating age-based advertisements, the surrounding context can instead refer to chronological age more generally.
A single floor statement by Senator Yarborough suggesting that the law barred age as a hiring factor "whichever way" the decision went could not overcome the statute's text in context, its consistent legislative record, and decades of judicial interpretation. Nor did the EEOC's regulation requiring age neutrality between workers over 40 control the result. The Court found the agency's interpretation clearly wrong because ordinary tools of statutory construction revealed Congress's contrary intent, so it did not decide whether Chevron or Skidmore deference otherwise applied.