Center for Retirement Research at Boston College. (2006, August). An Update on Private Pensions. Chestnut Hill, MA: Munnell, A.H., and Perun, P. Retrieved on November 1, 2006 from http://www.bc.edu/centers/crr/issues/ib_50.pdf

Using primarily the 1980 through 2005 Current Population Survey data, ”this brief…explores who is covered by a pension plan and who is not, how much retirees receive in pension income, and how pension coverage and receipt have changed over time. The key finding is that total pension coverage has continued to shift to 401(k) plans. These developments, coupled with declining levels of earnings replacement under Social Security, mean that future retirees will have to work longer if they want to maintain their pre-retirement standard of living in retirement." (p.1)