Working at club or shop, one with a fear of confined spaces (14)
I believe the answer is:
claustrophobia
'fear of confined spaces' is the definition.
(I've seen this before)
'working at club or shop one with a' is the wordplay.
'working' indicates an anagram.
'one' becomes 'i' (Roman numeral**).
'with' is a charade indicator (letters next to each other).
'at'+'club'+'or'+'shop'='atcluborshop'
'atcluborshop' is an anagram of 'claustrophob'.
'claustrophob'+'i'+'a'='CLAUSTROPHOBIA'
(Other definitions for claustrophobia that I've seen before include "Fear of confined spaces" , "major worry over space" , "Fear of confinement" , "feeling of being badly stuck in a corner?" .)