Shares inn - problem at work (2,7)
I believe the answer is:
in harness
'at work' is the definition.
(I've seen this in another clue)
'shares inn problem' is the wordplay.
'problem' indicates anagramming the letters.
'shares'+'inn'='sharesinn'
'sharesinn' is an anagram of 'IN HARNESS'.
(Other definitions for in harness that I've seen before include "Performing routine daily work" , "Working together" .)