The Singapore Standard Occupational Classification (SSOC) is the national standard for classifying occupations and is used for censuses of population, household surveys and administrative databases. The SSOC adopts the basic framework and principles of the International Standard Classification of Occupations (ISCO). It is reviewed and updated periodically to reflect developments in the labour market, particularly the emergence of new occupations, as well as to align with changes in the international standard.

Singapore Standard Occupational Classification SSOC 2020 

This SSOC 2020 is an update of the SSOC 2015 (Version 2018) edition. More details on the classification, including the principles, structure and changes from the previous edition are available in the publication “Singapore Standard Occupational Classification 2020”.

Detailed Definitions, Alphabetical Index and Correspondence Tables

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Previous Classifications

2015 (Version 2018)


Correspondence Tables



Correspondence Tables