To add the file name and path to the footer of a Word document, first make sure the document has been saved. Then choose Insert > Footer > Edit Footer. In Word 2013 locate the Document Info drop down list and, from it, select the File Path option. In Word 2007 & 2010, choose Quick Parts > Field and from the Categories list choose Document Information. From the Field Names list choose FileName, check the Add path to filename checkbox and click Ok. If desired you can format this to a smaller font size and, when you are done, click Close Header and Footer.