International occupation standard
ISCO-08 Code Directory
The International Standard Classification of Occupations (ISCO-08) is maintained by the International Labour Organization (ILO). It provides a hierarchical framework for classifying and aggregating occupational information.
Major groups (10)
Browse the ISCO-08 hierarchy by major group. Each major group contains sub-major groups, minor groups, and unit groups.
Major Group 0 Armed forces occupations 3 sub-major groups · 6 crosswalk rows Major Group 1 Managers 4 sub-major groups · 93 crosswalk rows Major Group 2 Professionals 6 sub-major groups · 308 crosswalk rows Major Group 3 Technicians and associate professionals 5 sub-major groups · 252 crosswalk rows Major Group 4 Clerical support workers 4 sub-major groups · 71 crosswalk rows Major Group 5 Service and sales workers 4 sub-major groups · 92 crosswalk rows Major Group 6 Skilled agricultural, forestry and fishery workers 3 sub-major groups · 22 crosswalk rows Major Group 7 Craft and related trades workers 5 sub-major groups · 112 crosswalk rows Major Group 8 Plant and machine operators, and assemblers 3 sub-major groups · 81 crosswalk rows Major Group 9 Elementary occupations 6 sub-major groups · 84 crosswalk rows
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Data source
ISCO-08 data on this site is derived from the SSOC 2024 ↔ ISCO-08 crosswalk published by the Singapore Department of Statistics. The ISCO-08 classification is maintained by the International Labour Organization (ILO).
Always verify against the official ILO ISCO-08 documentation before operational use.