The Criminal Antitrust Anti-Retaliation Act was recently signed into law, establishing new protections for whistleblowers who report criminal violations of the antitrust laws. The Act follows other recent measures to encourage antitrust compliance, including permanent extension of the Antitrust Criminal Penalty Enhancement and Reform Act and implementation of a new DOJ policy crediting corporate compliance efforts at both the charging and sentencing stages of a criminal antitrust case. These new initiatives make it more important than ever for companies to have effective antitrust compliance programs.