Then you start running into differing motivations. How often would you see employers "forget to" synch new hires with the unemployment system, figuring that will reduce their claim rate later? Or check in new hires as "verified citizen, eligible to work" when their proof consisted of a McLovin driver's license and a birth certificate still warm from the Kinko's across the street?

It feels like it would turn into every other abused aspect of employment law: widely exploited both because of technical incompetence and the knowledge most will get away with it.