Did you inherit a document with manually entered page breaks? This one is easy to fix in Word 2010 and 2013 with Advanced Find.
On the Home tab, Editing group, choose the Find dropdown button and then Advanced Find. Remove anything in the Find what field. Click the More >> button to reveal the Special button at the bottom. Click it and choose Manual Page Break. Now, over on the Replace tab, leave the With field blank. If you have to do this often, it might make sense to memorize the character definition, ^m. “^” is a shifted 6.