International Standard Classification of Occupations - The ISCO-08 Structure

The ISCO-08 Structure

The ISCO-08 divides jobs into 10 major groups:

  • 1-Managers
  • 2-Professionals
  • 3-Technicians and associate professionals
  • 4-Clerical support workers
  • 5-Service and sales workers
  • 6-Skilled agricultural, forestry and fishery workers
  • 7-Craft and related trades workers
  • 8-Plant and machine operators, and assemblers
  • 9-Elementary occupations
  • 0-Armed forces occupations

Each major group is further organized into sub-major, minor and unit (not shown) groups. The basic criteria used to define the system are the skill level and specialization required to competently perform the tasks and duties of the occupations.

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