PROBLEM: When you open Microsoft Word, it opens a new file. If you are viewing it in Print Layout, there is no header or footer.
SOLUTION: Tools --> Options --> View --> Print and Web layout Options --> Check the box next to WHITE SPACE BETWEEN PAGES (PRINT VIEW ONLY) --> Click Okay
WHY: I think I pushed a series of buttons or accidentally turned that off somehow.
NOTE: I use Microsoft Office 2003. These instructions might not match up with your version of Office. However, it is probably something similar.