The current version of the International Standard Classification of Occupations, ISCO-88, was adopted by the 14th ICLS in 1987 and approved by the ILO Governing Body in 1988, in English, French and Spanish.
ISCO-88 provides a system for classifying and aggregating occupational information obtained by means of population censuses and other statistical surveys, as well as from administrative records.
ISCO 88 groups jobs together in occupations and more aggregate groups mainly on the basis of the similarity of skills required to fulfil the tasks and duties of the jobs. Two dimensions of the skill concept are used in the definition of ISCO 88 groups:
- Skill level, which is a function of the range and complexity of the tasks involved, where the complexity of tasks has priority over the range; and
- Skill-specialisation, which reflects type of knowledge applied, tools and equipment used, materials worked on, or with, and the nature of the goods and services produced. It should be emphasised that the focus in ISCO 88 is on the skills required to carry out the tasks and duties of an occupation and not on whether a worker in a particular occupation is more or less skilled than another worker in the same or other occupations.
- Main objectives
- Conceptual framework
- Design and structure
- Summary of major group
- Approaches to some specific issues
- Notes of some particular occupations
- Mapping of national occupations into ISCO-88
- Key characteristics
- Comparisons with ISCO-68
- Regional variants of ISCO-88