Lore confused by job (4)
I believe the answer is:
role
'job' is the definition.
(a job is a role or position)
'lore confused' is the wordplay.
'confused' indicates anagramming the letters.
'lore' anagrammed gives 'ROLE'.
'by' acts as a link.
(Other definitions for role that I've seen before include "Playing part" , "A part of lore" , "Stage part" , "Part played (in life?)" , "Function; part" .)