Are you using the Word Mail Merge Wizard to specify your Outlook contacts
list as the data
source? If so,
a. Job Title is not actually available as a field in the data source (even
if it appears to be available, you are probably looking at a list of
"Address fields", which is a list of fields Word /might/ find in an address
list, rather than the list of "Database fields", which is what Word is
actually getting from the data source. Also, the field named "Title" is the
"Courtesy Title", not the "Job Title".)
b. initiate the merge by opening Outlook, opening your contacts folder,
going to Outlook|Tools|Mail merge and following the instructions.

If not, which version of Word, and what is the data source?

Peter Jamieson