Southern company having employment for Liverpudlian (6)
I believe the answer is:
scouse
'liverpudlian' is the definition.
(I've seen this before)
'southern company having employment' is the wordplay.
'southern' becomes 's' (abbreviation).
'company' becomes 'co' (abbreviation).
'having' says to put letters next to each other.
'employment' becomes 'use' ('use' can be a synonym of 'employment').
's'+'co'+'use'='SCOUSE'
'for' acts as a link.
(Other definitions for scouse that I've seen before include "another city's dialect" , "Slang for native of Liverpool" , "English dialect spoken in Liverpool" , "Liverpool accent" , "Liverpudlian (stew)" .)