Whether after-acquired evidence of employee misconduct that would have led to a lawful discharge bars all relief for an earlier discharge that violated the ADEA.
Holding
No. After-acquired evidence does not erase the employer's completed ADEA violation or bar the employee from all relief, although it substantially limits the remedies available.
Reasoning
The case had to be analyzed on the premise required at summary judgment: age was the sole reason McKennon was fired. Because the Banner did not discover her misconduct until after it discharged her, it could not contend that the misconduct actually motivated the original decision. A later-discovered lawful basis that could have justified termination is not the same as a lawful reason that did motivate termination.
The ADEA serves both compensatory and deterrent purposes. It provides a private right of action not merely to compensate an injured employee, but also to expose and deter discriminatory employment practices. Treating later-discovered misconduct as a complete defense would allow an employer's earlier discriminatory act to go entirely unremedied and would weaken the statute's enforcement scheme.
The Court rejected reliance on Mt. Healthy City Board of Education v. Doyle. Mt. Healthy concerned a mixed-motive decision in which the employer knew of both the lawful and unlawful reasons when it acted. This case was different because the asserted lawful reason—McKennon's misconduct—was unknown when the Banner made the discriminatory discharge decision. The employer therefore could not establish that it would have made the same decision for that reason at that time.
Traditional equitable principles, including the doctrine of unclean hands, do not require a complete bar. Where Congress has authorized broad remedies to advance important public policies, an employee's misconduct does not eliminate the court's authority to remedy a statutory violation. Still, the misconduct remains relevant because the ADEA prohibits discrimination; it does not generally deprive employers of their legitimate authority to discharge employees for serious wrongdoing.