Each year seems to bring significant developments in whistleblower law, and 2023 has been no exception. As whistleblower activity increases, so, too, has the scope of its protections. From state to federal government, from the SEC to the U.S. Supreme Court, courts and regulators in the last 12 months or so largely have made it easier for employees to raise whistleblower claims while making it harder for employers to defend them. Below are some of the highlights, including two important decisions effectively expanding the scope of protections under California’s general whistleblower law (Section 1102.5), a U.S. Supreme Court that seems to be leaning toward a ruling that may favor SOX plaintiffs, and an SEC enforcement action against a private company to enforce its whistleblower protection rule.