Make sure you “own” your fanpage. Fan pages are not transferable.
Be careful who sets up your fan page. If you have an employee set your fan page up, it’s connected to their accounts, if they leave, you can get screwed, as they can not only alter information in your page but can delete the fan page totally.
This applies for having an employee be an admin as well. If an employee leaves, you should revoke their admin status ASAP, they also have the ability to alter and delete the page as well.
You could also have an employee that’s created the page and they may leave and forget or refuse to give you access to your page. So when you set up your fan page make sure it’s registered through your own account.
I recently had this happen to one of my inns whose employee set up the fan page and has now departed for places unknown. You can submit a help request at http://www.facebook.com/help/?page=909#/help/contact.php?show_form=pages_not_restored but there is no guarantee the problem with ever be addressed. The downside of facebook is lack of tech support for issues. Free does sometimes come at a charge.
Make sure you, as the owner or primary of your business is the one that set its up, you can have as many admins as you want, but make sure you are the originator/creator of the page. This holds true for having marketing companies set your page up as well. Pages are not transferable. If you are unsure of how to set up a fanpage, facebook has a tutorial here: http://www.facebook.com/advertising/?pages
ADDENDUM: Facebook has recently put in the ability to remove the original creator/administrator of the page, unfortunately this opens up the can of worms of that anyone you give admin access to can also delete you as the “owner”.