Right to get worker to shout (4)
I believe the answer is:
rant
'to shout' is the definition.
(I've seen this in other clues)
'right to get worker' is the wordplay.
'right' becomes 'r' (common abbreviation).
'to get' is a charade indicator (letters next to each other).
'worker' becomes 'ant' (worker is a type of ant).
'r'+'ant'='RANT'
(Other definitions for rant that I've seen before include "Talk wildly and incoherently" , "Talk wildly, rave" , "Intemperate speech" , "Shout wildly at length" , "Speak intemperately" .)