The amount of money withdrawn from 401(k) plans exceeded the amount contributed to the retirement funds for the first time in 2013, according to a report in The Wall Street Journal.

The shift reflects demographic changes as more Baby Boomer retire from the workforce and begin tapping their savings, and young millennial workers put smaller amounts in.

Consumers may benefit from the trend as fund managers begin cutting fees and changing services in order to entice young workers to sock away more. “It changes the dynamic of the business itself,” J.P. Morgan Chase analyst Ken Worthington told The Journal.

Related: Here Are 7 Ways People Screw Up Their 401(k)s

Company-sponsored 401(k) plans had $4.6 trillion in assets last year, according to the Investment Company Institute. 

The average 401(k) balance at the end of the first quarter was $91,800, up 0.5 percent from the fourth quarter of 2014 and up 3.6 year-over-year, according to Fidelity. For employees in a plan for 10 years or more, the average balance was $251,600, up 12 percent year-over-year. 

Workers can contribute up to $18,000 in pre-tax dollars to their 401(k) plans in 2015, but most workers—especially younger ones—save far less each year. There are lots of reasons millennials are lagging in retirement savings: large numbers of them are still unemployed or underemployed in jobs that don’t have retirement benefits, and they’re diverting all their extra cash to student loans. Plus, retirement may not be top-of-mind for 20-somethings, no matter how many times they hear about the benefits of compound interest.