Most employers know that the plain language of the ADEA protects “individuals who are at least 40 years of age,” and its disparate impact provision prohibits an employer from “adversely affect[ing an employee’s] status . . . because of such individual’s age.” But in Karlo v. Pittsburgh Glass Works, the Third Circuit made employers’ lives a little more complicated by holding that “‘subgroup’ disparate-impact claims are cognizable under the ADEA.” In other words, the Third Circuit held that under the ADEA, employees in a subgroup older than 40 years old—in Karlo, the subgroup of employees was 50-and-older—can bring disparate impact claims against their employer alleging that they were “disfavored relative to younger employees,” even if the younger employees were 40 years old or older. Continue reading “Third Circuit Recognizes “Subgroup” ADEA Disparate-Impact Claims”