401k plan

Over the past two decades, 401(k) plans have grown to be the most widespread private-sector employer-sponsored retirement plan in the United States, and now serve as the most popular defined contribution (DC) plan, representing the largest number of participants and assets. In 2007, 48.5 million American workers were active 401(k) plan participants. By year-end 2007, 401(k) plan assets had grown to represent 17 percent of all retirement assets, with $3.0 trillion in assets. In an ongoing collaborative effort, the Employee Benefit Research Institute (EBRI) and the Investment Company Institute (ICI) collect annual data on millions of 401(k) plan participants as a means to accurately portray how these participants manage their accounts. This paper serves as an update of EBRI and ICI's ongoing research into 401(k) plan participants' activity through year-end 2007. The report is divided into four sections: The first describes the EBRI/ICI 401(k) database; the second presents a snapshot of participant account balances at year-end 2007; the third looks at participants' asset allocations, including a new analysis of 401(k) participants' use of lifecycle funds; the fourth focuses on participants' 401(k) loan activity.