International Standard Industrial Classification of All Economic ...

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Preface
The International Standard Industrial Classification of All Economic Activities (ISIC)
is the international reference classification of productive activities. Its main purpose is
to provide a set of activity categories that can be utilized for the collection and reporting
of statistics according to such activities.
Since the adoption of the original version of ISIC in 1948, the majority of countries
around the world have used ISIC as their national activity classification or have
developed national classifications derived from ISIC. ISIC has therefore provided
guidance to countries in developing national activity classifications and has become
an important tool for comparing statistical data on economic activities at the international
level. Wide use has been made of ISIC, both nationally and internationally, in
classifying data according to kind of economic activity in the fields of economic and
social statistics, such as for statistics on national accounts, demography of enterprises,
employment and others. In addition, ISIC is increasingly used for non-statistical purposes.
This fourth revision of ISIC (ISIC, Rev.4) is the outcome of a review process that
spanned several years and involved contributions from many classifications experts
and users around the world. This process resulted in an ISIC structure that is more
detailed than the previous version, responding to the need to identify many new
industries separately. This is especially applicable in the case of services. Moreover,
the relevance of the Classification has been enhanced with the introduction of new
high-level categories to better reflect current economic phenomena. A new section
entitled “Information and communication” (see part three, sect. J) is one such innovation.
Comparability has also been enhanced with a number of other regional activity
classifications, thus making this version of ISIC a much improved tool for international
data comparison.
A number of alternate aggregations have been included in the present publication.
They provide analytical tools for areas which, for conceptual reasons, do not
lend themselves to aggregation within the existing ISIC structure. Among the alternate
aggregations included in this version of ISIC are aggregations for information and
communications technology, the informal sector and non-profit institutions, as well
as two aggregations for national accounts-type analysis, one at very aggregated and
another at an intermediate level of ISIC.
The structure of the fourth revision of ISIC was considered and approved by the
Statistical Commission at its thirty-seventh session, in March 2006, 1 as the internationally
accepted standard. It now replaces the third revision of the classification 2 and
its update, Revision 3.1, 3 which have been in use since 1989 and 2002, respectively.
1 See Official Records of the
Economic and Social Council, 2002,
Supplement No.4 (E/2006/24),
chap. I, para. 3, item 37/105 (a).
2 Statistical Papers, No.4, Rev.3
(United Nations publication,
Sales No. E.90.XVII.11).
3 Statistical Papers, No.4, Rev.3.1
(United Nations publication,
Sales No. E.03.XVII.4).