FILE – In this July 15, 2009, file photo, job seeker Dave Pucci of Berwyn, Pa., looks over notes during a sixth annual "Grand Slam Career Fair" as he sits in the stands of Citizens Bank Park in Philadelphia. Philadelphia Mayor Jim Kenney signed a bill Monday, Jan. 23, 2017, that bans employers from asking potential hires to provide their salary histories, despite Philadelphia-based Comcast Corp.'s vow to challenge the measure in court. (AP Photo/Matt Rourke, File)