Remember that this is the signature "achievement" of Obama's first (and last) term. Weekly Standard: "Study: Under Obamacare, employees will likely engage in 'targeted dumping' of employees."
Minnesota Public Radio reports, “A loophole in the federal health care overhaul would allow many employers to game the system by dumping their sicker employees [into] public health insurance exchanges, according to two University of Minnesota law professors.” Such “targeted dumping” of sicker employees would cause Obamacare’s taxpayer-subsidized exchanges to cost more — potentially far more — than the Congressional Budget Office (CBO) has projected.
This seems to be a pattern with the Obama administration from Stimulus I to Cash for Clunkers to Obamacare to Solyndra: it won't work but at least it will cost a lot of money.