Give assistance to crazily laden worker (4,1,4)
I believe the answer is:
lend a hand
'give assistance' is the definition.
(I've seen this before)
'crazily laden worker' is the wordplay.
'crazily' indicates anagramming the letters.
'worker' becomes 'hand' (hand is a kind of worker).
'laden' is an anagram of 'lenda'.
'lenda'+'hand'='LEND A HAND'
'to' acts as a link.
(Other definitions for lend a hand that I've seen before include "Turn to and help" , "Provide help" , "To assist" , "Give assistance" , "temporarily transfer an employee" .)