If I participate in a 401K with my employment but I personally do not contribute anything to it, my employer does only, do I need to claim it?

[bwa · Accepted solution]

do I need to claim it?

If handled properly your employer should already have excluded their contribution from Box 1 (Wages, tips and other compensation) on your W-2.  If they have, entering the W-2 as provided to you should be the only action required.

[LeeM]

No, not until you receive a distribution (withdraw funds from your 401-K).