A,Professional and technical workers,
B,Managers and officials ,
C,Clerical and related workers ,
D,Sales workers,
E,Service workers,
F,Protective service workers,
G,"Agricultural, forestry and fisheries workers",
H,Workers in transport and communications occupations,
I,"Craftsmen, mining, production process and construction workers and labourers",
,I-1,"Metal material, machine, chemical products workers"
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,I-2,"Silk reel, textile, food, beverage manufacturing workers"
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,I-3,"Construction workers, stationary engine and construction machinery operators"
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,I-4,Labourers
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,I-5,Other craftsmen and production process workers
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J,Workers not classifiable by occupation,