"The ACA's employment taxes create strong incentives to work less. The health subsidies' structure will put millions in a position in which working part time (29 hours or fewer, as defined by the ACA) will yield more disposable income than working their normal full-time schedule. The reduction in weekly employment due to these ACA disincentives is estimated to be about 3 percent, or about 4 million fewer full-time-equivalent workers. This is the aggregate result of the law's employment disincentives, and is nearly double the impact most recently estimated by the [CBO]."