Go away — as would busy workers? (4,3)
I believe the answer is:
buzz off
'would busy workers?' is the definition.
I can't tell whether this definition defines the answer.
'go away' is the wordplay.
'go' becomes 'buzz' (buzzing is a kind of going).
'away' becomes 'off' (synonyms).
'buzz'+'off'='BUZZ OFF'
'as' acts as a link.
(Other definitions for buzz off that I've seen before include "Go away (like a swarm?)" , "leave hurriedly" , "Scram, get lost" , "Go away (like a 17?)" , "As a bee might - get lost!" .)