Vocal NATO boss holds one that has a lot to do with The Occupation? (10)

I believe the answer is:

vocational

I'm a little stuck... Click here to teach me more about this clue!

(Other definitions for vocational that I've seen before include "Job-related" , "of dedicated career" , "employment" , "Relating to an occupation" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

Want a hint initially instead of a full solution? Install my app