The booms and busts of the late 1990s and 2000s have taken 401(k) plan participants on a rollercoaster ride. Using data from administrative tax records and household surveys, this paper examines how participants responded to these periods of economic expansions and contractions by documenting changes in 401(k) participation, contributions, and contribution rates from 1990 to 2009. Controlling for earnings, job changes, and other household factors, we find that workers reduce their 401(k) participation and contributions during recessions – suggesting that they may be responding to changes in their expectations about the economy and stock market. We estimate that changes in participant behavior during the Great Recession, in particular, could lower 401(k) assets of the typical 30-year-old by as much as 8% at age 62.
