Man at manufacturing plant being docked, which is criminal (10)
I believe the answer is:
malefactor
'is criminal' is the definition.
(I've seen this before)
'man at manufacturing plant being docked' is the wordplay.
'man at' becomes 'male' (I can't justify this - if you can you should give a lot more credence to this answer).
'manufacturing plant' becomes 'factory' (synonyms).
'being docked' means to remove the last letter (to dock can mean to remove the tail of an animal).
'factory' with its final letter taken off is 'factor'.
'male'+'factor'='MALEFACTOR'
'which' is the link.
Can you help me to learn more?
(Other definitions for malefactor that I've seen before include "Sinner" , "Wrongdoer" , "bad person?" , "Criminal, evil-doer" , "culprit?" .)