U.S. Supreme Court creates a sea of change in the law of age discrimination

In what has been called a “sea change” in the law of age discrimination, on June 18, 2009, a sharply divided U.S. Supreme Court held in a 5-4 decision that employees bringing disparate treatment claims under the Age Discrimination in Employment Act (ADEA) must prove that age was the “but-for” cause of the adverse employment […]