Comparability
Contact info
Labour Market, Social StatisticsPernille Stender
+45 24 92 12 33
Get as PDF
The statistics were first published in 2018 with data for employed persons in the first to fourth quarters of 2008-2016. With the exception of a change in the occupational classification in 2010, the statistics for employed persons are comparable throughout the period 2008-2016. From 2017, in addition to persons in employment, the statistics also include the rest of the population with information about their primary attachment to the labour market. KAS is based on administrative registers with national characteristics, which makes it difficult to compare the statistics internationally.
Comparability - geographical
KAS is based on administrative registers with national characteristics, which makes it difficult to compare the statistics internationally. KAS follows the international guidelines from the International Labour Organization (ILO) for estimating the population main attachment to the labour market. The ILO guidelines are however pointed towards survey-based statistics (the Labour Force Surveys), where the person itself provides the information about the connection to the labour market. Since KAS on the other hand is based on register data, the ILO guidelines are adjusted for use for RAS. It is therefore recommended that the Labour Force Surveys (LFS) are used for international comparisons, while KAS is mainly used to illustrate national structures.
Comparability over time
The statistics are comparable for persons employed throughout the period 2008-2024, with the exception of a change in the occupational classification.
Changes in classification of occupation
The level of skills for employees are determined by DISCO-08, which is reported to the wage statistic. From 2010 the classification is changed, which means that the level for 2008-2009 are based on DISCO-88, while it from 2010 is based on DISCO-08. The changes are due to changes in the international classification behind: ISCO. The change causes the number of employees on highest level to increase with about 200,000 persons, while the number of employees on the middle level dropped proportional. The change had impact on among other large groups of employees all pedagogic work, some nursing work and some from the financial sector.
Change in population extraction
From 2017 onwards, the statistics include not only the employed population but also the rest of the population. This is possible because, starting in 2017, the population is extracted so that the time span between the reference and registration dates is consistent month by month. This means that, for example, comparable employment rates can be calculated for each quarter.
Coherence - cross domain
The number of people employed and unemployed in KAS deviates from other statistics. You can read more about the differences bellow:
Registerbased labour force statistic (RAS)
RAS is a status over the populations primary attachment to the labour market on the last work day of November, and has since 2015 (like RAS) used LMA as data foundation.
See also the documentation of statistics for Register-Based Labour Force Statistics.
Coherence - internal
KAS is based on the Labour Market Account (LMA) which is compiled on a number of different sources. KAS is the result of an average calculation of the population's primary labour market attachment in every day in the quarter in LMA.