Workers in this stable damaged business (13)
I believe the answer is:
establishment
'business' is the definition.
(I've seen this before)
'workers in this stable damaged' is the wordplay.
'workers' becomes 'men' (man is a kind of worker).
'in' is an insertion indicator.
'damaged' indicates anagramming the letters.
'this'+'stable'='thisstable'
'thisstable' anagrammed gives 'establisht'.
'men' going into 'establisht' is 'ESTABLISHMENT'.
(Other definitions for establishment that I've seen before include "Foundation" , "Power-wielding class" , "Formation" , "Institutionalized authority" , "Permanent staff - powerful class" .)