Not quite sure that I understand what you asking. If you want filter search results make sure that this field exists (I assume this JobStatus) in your index. if you go to yourPagetype/search fields/JobStatus - searchible is checked. You can test search results with out filter part by adding condition like +jobstatus: "somestatus"
just to see if changes anything.
And then if you are using filter the query should be something like
SELECT 'jobstatus',JobStatus, JobStatusDisplayName FROM YourCustom_JobStatusTable c (NOLOCK)
ORDER BY JobStatusDisplayName
P.S. You have to make sure that field with the name jobstatus exist in your index. you can use lukeall to browse Lucene indexes and make sure that the field is there.