Mayor Bill de Blasio issued an Executive Order back in November 2016 that banned city agencies from asking for a salary history in employment interviews, but he needed a formal ordinance to impose the mandate on private employers. He got that ordinance this week on Wednesday when the New York City Council approved legislation extending the ban to private employers throughout the city. It will take effect six months after it is signed into law by de Blasio and have New York join Philadelphia as the only two cities so far to ban the question from private employment interviews. Massachusetts and Puerto Rico also have a ban in place. That said, the Chamber of Commerce of Greater Philadelphia initiated an action in federal court just yesterday challenging the legality of the Philadelphia ban. In their suit, the Chamber alleges that the ban violates the First and Fourteenth Amendments as well as the Commerce Clause of the US Constitution in addition to the Pennsylvania State Constitution.