Step 1: Go to the REVIEW tab and select ‘Final: Show markup’ in the drop down menu (Word 2013).

Step 2: Click on ‘Show markup’ below ‘Final: Show markup’ and tick ‘Comments’ (Word 2013).

Show comments Word 2013
Show comments (Word 2013)
Show comments Word 2010
Show comments (Word 2010)
Show comments Word 2007
Show comments (Word 2007)
Show comments Word 2003
Show comments (Word 2003)