For a change, draw a line when losing in unjust situation (3,4)
I believe the answer is:
raw deal
'unjust situation' is the definition.
'for a change draw a line when losing in' is the wordplay.
'for a change' is an anagram indicator.
'a line' becomes 'l'.
'when losing' becomes 'ea' (I can't justify this - if you can you should believe this answer much more).
'in' indicates putting letters inside.
'draw'+'l'='drawl'
'drawl' is an anagram of 'rawdl'.
'rawdl' going around 'ea' is 'RAW DEAL'.
(Other definitions for raw deal that I've seen before include "Unfair treatment for uncooked wood?" , "cruel treatment" , "Rough end" , "Unjust payoff" , "Unfair treatment for unprocessed timber" .)