From 2001, the National Statistics Socio-economic Classification (NS-SEC) has been used for official statistics and surveys. It was rebased in 2010.1 It replaces social class based on occupation and socio-economic groups. The information required to create the NS-SEC is occupation (coded to the Standard Occupational Classification 2000) and details of employment status (whether an employer, self-employed, or employee; whether a supervisor; number of employees at the workplace) (see Box A8.1). There are eight classes, the first of which can be subdivided.
A simpler, self-coded version of the NS-SEC has been developed with five classes for use in postal surveys or where detailed occupation information is not needed (Box A8.2).
Box A8.1 The National Statistics Socio-economic Classification Analytic Classes*
* For complete coverage, the three categories of students, occupations not stated or inadequately described, and not classifiable for other reasons are added as ‘Not classified’.
Box A8.2 Simpler National Statistics Socio-economic Classification Analytic Classes
1 Further information: https://www.ons.gov.uk/methodology/classificationsandstandards/otherclassifications/thenationalstatisticssocioeconomicclassificationnssecrebasedonsoc2010.