Add Last Save Date to Word Documents

In case you want to keep track when a document was last saved, here is what you need to do:

1. On the Insert tab, in the Text group, click Quick Parts ->Field.

3. In the Categories box, click Date and Time.

4. In the Field names box, click CreateDate, PrintDate, or SaveDate.

5. In the Date formats box, click the date and time format that you want — for example, 2/12/2008 9:45 PM or 12 February 2008.

Source:http://office.microsoft.com/en-001/word-help/insert-the-date-and-time-a-document-was-created-last-printed-or-last-saved-HA010100340.aspx