One of the best things about investing in a 401(k) is getting an employer match. But a recent survey found that a shockingly large number of employees don't contribute enough to their retirement accounts to take full advantage of matching contributions.

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In the following video, Dan Caplinger, The Motley Fool's director of investment planning, looks more closely at the Fidelity survey, which found that 21% of workers miss out on the free money available from matching. Dan notes that in some cases, all it takes is a 3% contribution in order to get full matching, making it seem inconceivable that workers wouldn't take advantage. But Dan suggests that high investing costs and long vesting requirements can dissuade people from saving in their 401(k), even though those arguments have flaws of their own. Dan concludes that it's important to use your 401(k) as effectively as possible.

Have general questions about Social Security? Email them to SocialSecurity@fool.com, and they might be the subject of a future video!

Dan Caplinger has no position in any stocks mentioned, and neither does The Motley Fool. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.