<prompt> Human: My girlfriend has a 457 Deferred Compensation Plan DCP thru the state of Virginia which comes with a 401 Cash Match account. She elected to contribute enough money to max-out the cash matching. Today she found out that, for the last year, HR has been deducting less from her paycheck than she originally elected. As a result, she hasnt gotten the level of matching contributions or earnings she should have gotten had they not made the mistake. Obviously, she will keep closer watch on her paystubs from now on. However, I am wondering, since they made the mistake are they required to help correct the error with any make-up contributions?Edit: What about this?  <response>: She didnt look at her pay stub all year?? I think this is on her. Every pay day I look at my pay stub quickly to see my 401k and HSA is all getting funded, I think its a good habit to get into 