One's disparaged for going to work in small taxi (4)
I believe the answer is:
scab
'one's disparaged for going to work' is the definition.
I can't judge whether this definition defines the answer.
'small taxi' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'taxi' becomes 'cab' (synonyms).
's'+'cab'='SCAB'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for scab that I've seen before include "he refuses to come out" , "Evidence of healing wound - crosser of picket line" , "Wound's crust" , "despicable person" , "He's not out" .)