If your employer offers matching funds for your retirement investments, make sure you aren't leaving money on the table by not getting all of the match. Log into your 401 (k) administrator's website, or contact HR, to see if you are getting all the money you are entitled to.
To calculate how much free money is available from your employer's match, multiply the match percentage by your annual salary. This is the maximum amount you can put into your 401 (k) and have your employer contribute additional free money. Then look at your current monthly contribution and multiply by 12 to see your annual contribution. If the number is less than the employer match number, you are leaving free money on the table.