How substantial might the shift from work to welfare be?

“Using CPS data, we estimate that between 840,000 and 1.5 million childless adults in the US currently earn less than 200 percent of the poverty line, have employer-provided insurance, and are not eligible for public health insurance.

Applying our labor supply estimates directly to this population, we predict a decline in employment of between 530,000 and 940,000 in response to this group of individuals being made newly eligible for free or heavily subsidized health insurance. This would represent a decline in the aggregate employment rate of between 0.3 and 0.6 percentage points from this single component of the ACA.”