Contract workers welcomed by a salute (9)
I believe the answer is:
agreement
'contract' is the definition.
(I've seen this before)
'workers welcomed by a salute' is the wordplay.
'workers' becomes 'men' (man is a kind of worker).
'welcomed by' is an insertion indicator (I've seen this in other clues).
'salute' becomes 'greet' (I've seen this in other clues).
'a'+'greet'='agreet'
'men' put inside 'agreet' is 'AGREEMENT'.
(Other definitions for agreement that I've seen before include "Compact, accord" , "in sympathy" , "Accord, contract" , "Union < matching" , "Harmony, concurrence" .)