After leaving your current job, you have up to 60 days to decide what happens to your retirement savings. Otherwise, your savings transfer automatically to another retirement account. In most cases, employers have clear guidelines indicating what you can do with your 401(k).
There are a few things to remember when you go to rollover your 401(k) from a previous employer. If your previous employer disburses your 401(k) funds to you, you have 60 days to rollover those funds into an eligible retirement account. Take too long, and you'll be subject to early withdrawal penalty taxes.