Unless you are fully (or nearly fully) vested the employer match isn’t much incentive to participate in a 401k. I have no data to support this, but in the first few years of employment the odds are probably high that you will be working elsewhere before being fully vested.
At your second or third complete year with the company you will have a much stronger feeling for whether or not you will be with this company the 4-5 years it would take to make participating in the 401k worth while.
My advice is to save/invest in other ways right now.
