Confusion about rum being consumed in work (7)
I believe the answer is:
turmoil
'confusion' is the definition.
(I've seen this before)
'about rum being consumed in work' is the wordplay.
'about' indicates anagramming the letters.
'being consumed in' is an insertion indicator.
'work' becomes 'toil' (toil is a kind of work).
'rum' is an anagram of 'urm'.
'urm' inserted within 'toil' is 'TURMOIL'.
(Other definitions for turmoil that I've seen before include "racket" , "Wild disorder" , "Tumult, upheaval" , "Violent confusion" , "Violent commotion" .)