Okay so i have the following JQL:
(category = "Customer Projects" OR category = "Shared - Customer Project Workflow") AND labels = re-work
and it brings back the following results:

What i need to do now is add to the JQL so that it only brings back all those with a 'Re-work label' as Empty (None) as some of these are populated.
If i add AND "Re-work Label" is EMPTY onto the end of the JQL it brings back no results. I have tried different ways of adding that final part into the JQL with no luck.
Does anyone know the correct answer please?
Thanks
Phil