Argues against work attitudes (7)
I believe the answer is:
opposes
'argues' is the definition.
(opposing is a kind of arguing)
'against work attitudes' is the wordplay.
'against' says to put letters next to each other.
'work' becomes 'op' (common abbreviation for 'opus').
'attitudes' becomes 'poses' (I've seen this in other clues).
'op'+'poses' is 'OPPOSES'.
(Other definitions for opposes that I've seen before include "Disagrees with and attempts to prevent" , "Stands against" , "Counters" , "Goes against" , "Strongly disapproves" .)