This paper provides a new econometric specification and new evidence on the impact of 401(k) plans on household wealth. We allow the impact of 401(k)s to vary over both time and earnings groups. Our specification--motivated by a variety of theoretical considerations and data...

Retirement saving accounts, particularly employer-provided 401(k) plans rapidly in the last decade. More than forty percent of workers are currently eligible for thesequot; plans, and over seventy percent of eligibles participate in these plans. The substantial andquot; ongoing accumulation of...