Queries :: Distinct Count In Access 2010?

I'm trying to write a query to get a count of Volunteers under a certain Job Code for a given year - problem comes in that a single Volunteer may record hours multiple times under a Job Code in a given Fiscal Year. I can't seem to get "Unique Values" to work. From my research it looks like I need a two-part query but (as a newbie) I'm not quite sure how to write that. I have two queries, one that works and one that doesn't.

This one counts total amount of hours volunteered under a given Job Code, it works:

Code:
SELECT tblHoursWorked.FiscalYear, tblHoursWorked.JobCodeLookup, Sum(tblHoursWorked.HoursWorked) AS [Sum Of HoursWorked]
FROM tblHoursWorked
GROUP BY tblHoursWorked.FiscalYear, tblHoursWorked.JobCodeLookup;
HAVING (((tblHoursWorked.FiscalYear)=[Enter Year:]));

This one attempts to count number of Volunteers that worked under each Job Code in a given year - it instead counts number of entries under that job code. What I think I need to do is count unique instances of the NamesIDFK, but I can't seem to get that to work.

Code:
SELECT DISTINCT tblHoursWorked.[JobCodeLookup]
FROM tblHoursWorked
GROUP BY tblHoursWorked.[JobCodeLookup];

1) correcting my second query and 2) putting them into one query so I can use them in a report.