Give a worker too much (4,4)
I believe the answer is:
hand over
'give' is the definition.
(I know that hand over is a type of give)
'a worker too much' is the wordplay.
'a worker' becomes 'hand' (hand is a kind of worker).
'too much' becomes 'over' (I've seen this in other clues).
'hand'+'over'='HAND OVER'
(Other definitions for hand over that I've seen before include "Pass something to control of another - manually?" , "Present or give to another person - manually?" , "Pass across; surrender" , "Transfer" , "Yield possession of in overhand way" .)