If you want to be mildly outraged, compare your 401k program's S&P 500 tracking fund's fees with Vanguard's. Depending on your company, it can be more than 20x the cost, for a fund that requires minimal oversight.
tl;dr: open an IRA, buy Vanguard
(And then if you switch jobs, roll it over into a Vanguard IRA.)
If your company has you in a crappy retirement ask them to change!