Farewell that makes good past worker upset? (6,9)
I believe the answer is:
golden handshake
'farewell that' is the definition.
The definition suggests a singular noun which matches the answer.
'good past worker upset?' is the wordplay.
I cannot really see how this works, but
'good' could be 'g' (abbreviation) and 'g' is found within the answer.
'past' could be 'olden' (similar in meaning) and 'olden' is found in the answer.
'worker' could be 'hand' (hand is a kind of worker) and 'hand' is located in the answer.
'upset?' could be 'shake' (I've seen this before) and 'shake' is found within the answer.
No letters remain.
This explanation may well be incorrect...
'makes' acts as a link.
Can you help me to learn more?
(Other definitions for golden handshake that I've seen before include "Ready to remove" , "severance pay" , "Improved P45" , "retirement present" , "this may be hoped for on retirement!" .)