Workers in a welcome consensus (9)
I believe the answer is:
agreement
'consensus' is the definition.
(thesaurus)
'workers in a welcome' is the wordplay.
'workers' becomes 'men' (man is a kind of worker).
'in' indicates putting letters inside.
'welcome' becomes 'greet' (I've seen this before).
'a'+'greet'='agreet'
'men' put into 'agreet' is 'AGREEMENT'.
(Other definitions for agreement that I've seen before include "Unlikely result" , "Harmony, concurrence" , "State of being consistent" , "understanding" , "Harmony of opinion" .)