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National Classifications

Korean Standard Classification of Occupations

Country / Area: Korea, Republic of

Classification category: Occupation classifications

General information
1 (a)Name of the current national classification (full name in official national languages and in English with acronyms in brackets, should be given)Korean Standard Classification of Occupations (KSCO)
1 (b)In which language(s) is the classification available?Korean and English (numerical list of titles)
1 (c)Can the classification (or information about it) be accessed on the Internet? If yes, please provide the URL.http://kostat.go.kr/kssc
Classification structure
2 (a)Please describe the structure of the classification: How many levels does the classification have? (Please provide labels, such as “Division”, “Class”) How many categories exist at each level?KSCO has been established on the basis of the International Standard Classification of Occupations (ISCO). It defines 5 levels of aggregation and the structure is as follows:

10 Major groups
52 Sub-major groups
149 minor groups
426 unit groups
1,206 sub-unit groups.

2 (b)Please provide examples of the coding system used at each level.Major group 1 Managers
Sub- Major group 12 Administrative and Business Support Management Occupations
Minor group 120 Administrative and Business Support Managers
Unit group 1201 Managers of Government Administration
Sub- Unit group 12010 Managers of Government Administration
Relationship to international standards
3 (a)Is this classification based on (or linked to) an international standard classification? If yes, please describe.Yes. KSCO, Rev. 6 was revised, based on ISCO, Rev. 3
3 (b)Is the classification structure identical to the international standard or, if not, how does it differ? (e.g. have additional levels been added to the international standard or have changes been made within the level of the international structure, such as aggregations or additional breakdowns)To the fourth level, the structure of KSCO (Rev. 6) is very similar to that of ISCO (Rev. 3). However, to reflect the Korean circumstances, sub-unit groups have been added and the classification categories and code numbers have been adapted.
3 (c)Please describe deviations from the international standard (in terms of structure, methodology or application rules). Please use examples, if a general statement is not possible.To denote the Korean labour market and occupational structure, the structure of KSCO, Rev. 6 has been modified through adjustment such as integration and division. For instance, ISCO major group 2 (Professionals) and 3 (Technicians and associated Professionals) = KSCO major group 2 (Professionals and related workers) while ISCO major group 5 (Service and sales workers) = KSCO major group 4 (Service workers) + major group 5 (sales workers). ISCO includes soldiers into major group 0 but KSCO classifies the occupation as a specific major group, A (because the work type of soldiers fails to meet the general principle of the job classification.)
3 (d)At what level of the international standard can data be reported for international comparison? (Please provide examples of programmes / indicators if reporting takes place at different levels of the classification.)For the survey of business activities, KOSTAT collect, compile and publish data at 2-digit KSCO level. For international comparison, data can be adapted according to the correspondence table between KSCO, Rev.6 and ISCO, Rev.3.
3 (e)If no links to international classifications exist or no international standard is used, please state if there are plans to use international norms in the future. 
Classification uses
4 (a)Please state for which statistical purposes (surveys etc.) this classification is used and if there are users outside of the Statistical Office. Please indicate at which level the classification is used for data collection and for data publishing.In Korea, KSCO, Rev.6 should be used for producing official statistics. So research institutions and public corporations as well as central government agencies and local governments use KSCO to collect data. KSCO level for data collection differs depending on surveys but usually data are collected at 3-digit KSCO level and published at 2-digit KSCO level.
4 (b)Please give the names of institutions that use the classification for non-statistical purposes (as opposed to statistical purposes in question 4(a)). Also indicate the kind of use (e.g. tax offices, social security, customs, enterprise register, employment services, work permits etc.)The classification is used for the following: salary standards by occupation, standards of allowance payment and standards of employment placement, etc.
4 (c)Please indicate if alternative classifications are used by other institutions of the economy. Are these classifications available and useful for the Statistical Office? 
Implementation / revision status
5 (a)Please state the date of the official adoption of the classification. If not yet adopted, please indicate the current state (e.g. in development, sent for approval, in printing, ready to be distributed etc.)The classification was adopted in 1963. KSCO, Rev.6 was revised in July 2007 and came into force on 1 October 2007.
5 (b)Please state the date of use of the classification for individual statistical programmes. 
5 (c)Are there existing plans for revision or update of the current classification?We are planning to review the revision of KSCO, Rev. 6 in 2014.
5 (d)Name of former (previous) national classification (full name in both national tongue and in English with acronyms in brackets, should be given)The name, Korean Standard Classification of Occupations (KSCO) has not been changed.
5 (e)Please describe the link of the former classification to international classificationsKSCO, Rev.5 was revised, based on ISCO, Rev.2.
5 (f)Please describe the structure of the former classification and indicate the number of items at each level of the classification. (similar to question 2(a))KSCO Rev.5 Structure
11 Major groups 11 (1 digit)
46 Sub- Major groups 46 (2 digits)
162 Minor groups 162 (3 digits),
447 Unit groups 447 (4 digits)
1,404 Sub- Unit groups 1,404(5 digits)
5 (g)Do conversion tables exist between the former and current classification?Yes.
5 (h)When was the former classification implemented?KSCO Rev.5 came into effect on 1 March 2000.
5 (i)Are statistical data still collected or published according to the former classification? Please indicate if this statistical data is collected or published by the Statistical Office or elsewhere.No.
Supporting documents
6 (a)Have national explanatory notes and/or guidelines been elaborated?There are explanatory notes for KSCO, Rev.6.
6 (b)Do correspondence tables exist between the national and the international classifications (if applicable)?Yes. There are correspondence tables between KSCO, Rev.6 and ISCO, Rev.3.
6 (c)Are correspondence tables between alternative and current classification available (if applicable)? 
6 (d)Does a national coding index exist?Yes.
6 (e)Is the classification available in electronic form? If yes, in which formats is it available?(e.g. PDF, TXT, Excel, XML)It is available in Excel and PDF formats.
6 (f)Are the correspondence tables or indexes available in electronic form? Yes, they are.
Contact information
7 (a)Name of institution / office responsible for the development and maintenance of the classificationStatistical Standard Team, Statistics Korea
7 (b)Contact address, phone number, e-mail or website for public information and inquiry1702 ho, Statistics Korea, Government Complex Daejeon, 189 Chensa-ro, Seo-gu, Daejeon, Republic of Korea 302-701(zip
Other comments
9 (a)Please provide any other information on this classification that you consider relevant 

Source: UN questionnaire, 8/1/2012