Work at home I love - craftsman's ultimate judgement (7)
I believe the answer is:
opinion
'judgement' is the definition.
('opinion' can be a synonym of 'judgement')
'work at home i love craftsman's ultimate' is the wordplay.
'work' becomes 'op' (abbreviation for opus**).
'at home' becomes 'in' ('in' can be similar in meaning to 'at home').
'love' becomes 'o' (In tennis, 'love' means 'zero').
'ultimate' says to take the final letters.
The final letter of 'craftsman' is 'n'.
'op'+'in'+'i'+'o'+'n'='OPINION'
(Other definitions for opinion that I've seen before include "A view held, what one thinks" , "school of thought" , "Belief or conviction" , "Estimation" , "Assessment" .)