International Standard Classification of Occupations

The International Standard Classification of Occupations (ISCO) is an International Labour Organization (ILO) classification structure for organizing information on labour and jobs. It is part of the international family of economic and social classifications of the United Nations. The current version, known as ISCO-08, was published in 2008 and is the fourth iteration, following ISCO-58, ISCO-68 and ISCO-88.

The ILO describes the purpose of the ISCO classification as:

a tool for organizing jobs into a clearly defined set of groups according to the tasks and duties undertaken in the job. It is intended for use in statistical applications and in a variety of client oriented applications. Client oriented applications include the matching of job seekers with job vacancies, the management of short or long term migration of workers between countries and the development of vocational training programmes and guidance.

The ISCO is the basis for many national occupation classifications as well as applications in specific domains such as reporting of teaching, agricultural and healthcare workforce information. The ISCO-08 revision is expected to be the standard for labour information worldwide in the coming decade, for instance as applied to incoming data from the 2010 Global Round of National Population Censuses.

The ISCO-08 divides jobs into 10 major groups:

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.

MANAGERS

PROFESSIONALS

TECHNICIANS AND ASSOCIATE PROFESSIONALS

CLERICAL SUPPORT WORKERS

SERVICE AND SALES WORKERS

SKILLED AGRICULTURAL, FORESTRY AND FISHERY WORKERS

CRAFT AND RELATED TRADES WORKERS

PLANT AND MACHINE OPERATORS AND ASSEMBLERS

ELEMENTARY OCCUPATIONS

ARMED FORCES OCCUPATIONS

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