Socio-Economic Classification (SOCIO02), v1:2002
Based on the source of income, it is determined whether a person is self-employed, assisting spouse, employee, unemployed or outside the workforce, including pensioner, cash beneficiary or education applicant.
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/socio?id=33735884-a622-4644-a4ec-7526ed2ada55