Journal of Economic Perspectives
Vol. 29, Issue 2, Pages 123-150
The share of working-age Americans receiving disability benefits from the federal Disability Insurance (DI) program has increased significantly in recent decades, from 2.2 percent in the late 1970s to 3.5 percent in the years immediately preceding the 2007–2009 recession and 4.4 percent in 2013.
Liebman, Jeffrey. "Understanding the Increase in Disability Insurance Benefit Receipt in the United States." Journal of Economic Perspectives 29.2 (Spring 2015): 123-150.