HISCO tree

0 Professional, technical and related workers
1 Professional, technical and related workers
1-3 Teachers
2 Administrative and managerial workers
3 Clerical and related workers
4 Sales workers
5 Service workers
6 Agricultural, animal husbandry and forestry workers, fishermen and hunters
7 Production and related workers, transport equipment operators and labourers
8 Production and related workers, transport equipment operators and labourers
9 Production and related workers, transport equipment operators and labourers