Goes through purgatory to prepare workers in commercials (4,6)
I believe the answer is:
make amends
'goes through purgatory' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'prepare workers in commercials' is the wordplay.
'prepare' becomes 'make' ('make' can be a synonym of 'prepare'**).
'workers' becomes 'men' (man is a kind of worker).
'in' is an insertion indicator.
'commercials' becomes 'ads' (I've seen this before).
'men' going inside 'ads' is 'amends'.
'make'+'amends'='MAKE AMENDS'
'to' is the link.
Can you help me to learn more?
(Other definitions for make amends that I've seen before include "put things right" , "Compensate (for a wrongdoing)" , "Atone" , "Remedy" , "Compensate for loss or injury" .)