Servant working for hostelries (7)
I believe the answer is:
taverns
'hostelries' is the definition.
(I've seen this before)
'servant working' is the wordplay.
'working' is an anagram indicator.
'servant' with letters rearranged gives 'TAVERNS'.
'for' acts as a link.
(Other definitions for taverns that I've seen before include "Inns, pubs" , "Old pubs" , "Hostelries" .)