This person in firm gets hurt (6)
I believe the answer is:
harmed
'hurt' is the definition.
(thesaurus)
'this person in firm' is the wordplay.
'this person' becomes 'me' (I've seen this in other clues).
'in' indicates putting letters inside.
'firm' becomes 'hard' ('hard' can be similar in meaning to 'firm').
'me' placed within 'hard' is 'HARMED'.
'gets' is the link.
(Other definitions for harmed that I've seen before include "Injured or damaged" , "Hurt" .)