Every time I opened my WORD 2013 blank document, the top margin was missing:
Annoying, but was simple to fix.
If you’re reading the document in Print Layout view and all of the pages appear to be cut off, with no top or bottom margin, the option for hiding white space between pages has been turned on. You can restore them by pointing and clicking in the document.
1. When top and bottom margins are not showing, point to the top or bottom of a page until the pointer becomes a double-pointed arrow, and then double click.
Additionally, you can double check the WORD Options:
1. Click on File (in an open WORD 2013 document)
2. Click on Options
3. Click on Display > Select Show white space between pages in Print Layout view