Originally Posted by index

That is correct. But it's not until you reach the 415(c) limit of $52,000 (up from the $51,000 limit in 2013).

For 2014, you can put in $17,500 of your own pretax money (another $5,500 if you're 50 or older). The company kicks in their 15% until the total amount hits $52,000. At that point, they keep paying you the 15% as ordinary income. It'll show up on your check in the left hand column of your paycheck under "Earnings" as "DC Excess"