A,Professional and technical workers ,
B,Managers and officials ,
C,Clerical and related workers ,
D,Sales workers,
E,"Agricultural, forestry and fisheries workers",
F,Mining workers,
G,Workers in transport and communications occupations,
H,Craftsmen and production process workers,
,H-1,"Metal material, machine, chemical products workers"
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,H-2,"Silk reel, textile, food, beverage manufacturing workers"
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,H-3,"Construction workers, stationary engine and construction machinery operators"
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,H-4,Other craftsmen and production process workers
I,Labourers,
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J,Protective service workers,
K,Service workers,
L,Unclassifiable,