Not in favour of presenting problems after work (8)
I believe the answer is:
opposing
'not in favour of presenting' is the definition.
I can't tell whether this defines the answer.
'problems after work' is the wordplay.
'problems' becomes 'posing' (I am not sure about this - if you are sure you should believe this answer much more).
'after' means one lot of letters go next to another.
'work' becomes 'op' (common abbreviation for 'opus').
'posing' after 'op' is 'OPPOSING'.
Can you help me to learn more?
(Other definitions for opposing that I've seen before include "modelling after work" , "Disapproving" , "Going against" , "Contending" , "trying to end a sea of troubles by it?" .)