Here is a good explination of it from The Washington Post
http://www.washingtonpost.com/blogs/...-unemployment/
Here are the highlights:
"Under questioning today before the House Budget Committee from Dem Rep. Chris Van Hollen, CBO director Douglas Elmendorf confirmed that in reality, his report suggests Obamacare will reduce unemployment:
The CBO report found that Obamacare — through subsidizing health coverage – would reduce the amount of hours workers choose to work, to the equivalent of 2.5 million full-time workers over 10 years. This was widely spun by Republicans as a loss of 2.5 million jobs.
To counter this, Van Hollen cited the report’s findings on Obamacare’s impact on labor demand, rather than supply. On page 124, the report estimates that the ACA will “boost overall demand for goods and services over the next few years because the people who will benefit from the expansion of Medicaid and from access to the exchange subsidies are predominantly in lower-income households and thus are likely to spend a considerable fraction of their additional resources on goods and services.” This, the report says, “will in turn boost demand for labor over the next few years.”
“When you boost demand for labor in this kind of economy, you actually reduce the unemployment rate, because those people who are looking for work can find more work, right?” Van Hollen asked Elmendorf.
“Yes, that’s right,” Elmendorf said.