If you do not know what you can do for your retirement money, then you better opt for the 401K rollover. However, you should know that there are a lot of types that you can do with 401K rollover. Firstly, you may opt to leave your money to where it is at that moment so that you can be sure that it will not be touched by anyone and there will be an administrator that will take of it. Secondly, you may opt to have your retirement money directed to a new administrator. If you do this, it is advisable that you create a new IRA account. Moreover, you can also opt for the indirect procedure where the retirement money will be sent you and you will be the one to send it over to the new administrator. Hence, whatever way you choose to handle your 401K rollover, it is best that you keep a record to yourself.