KEY POINTS
  • In 401(k) plans with voluntary enrollment — meaning employees have to actively sign up — women are more likely to participate than men.
  • The largest difference is in the $50,000-to-$74,999 income range: 81% of women participate versus 67% of men.
  • The House passed a bill in March that would require many 401(k) plans to auto-enroll their workers, although it's uncertain whether it will make it into law this year.

Some men may need a bigger push than women when it comes to participating in their workplace retirement-savings plan, new research suggests.

In 401(k) plans with automatic enrollment — meaning employees must opt out if they don't want to participate — 93% of both men and women remain signed up, according to a report from Vanguard. But in plans whose enrollment is voluntary — workers have to actively enroll — men lag behind women in participation rates at all income levels, most notably below $150,000.