Sending out East on a job (8)
I believe the answer is:
emission
'sending out' is the definition.
(I've seen this before)
'east on a job' is the wordplay.
'east' becomes 'e' (synonyms).
'on' is a charade indicator (letters next to each other).
'a job' becomes 'mission' (I've seen this in other clues).
'e'+'mission'='EMISSION'
(Other definitions for emission that I've seen before include "Process of giving out" , "The act of giving out (heat, light, gas, etc.)" , "radiation leakage?" , "Sending forth" , "issue" .)