Comparability
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Labour Market, Social StatisticsMikkel Zimmermann
+45 51 44 98 37
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The statistics have been compiled since 1994. Minor breaks in time series may occur when organisations change their reporting methods. The significant drop in membership figures for certain LO-affiliated organisations from 2011 to 2012 is due to previous reporting that included members without labour market affiliation. This has been partially corrected as of the publication on 18 May 2025, where figures for 2007–2011 were revised downwards for selected organisations.
Also, membership of the Central Organisations varies over time as the employee organisations can sign in and out of the Central Organisations. In addition, new employee organisations appear and other organisations disappear over time. Organisations are not always able to revise figures retrospectively.
Comparability - geographical
The statistics is not internationally comparable.
Comparability over time
The statistics have been compiled since 1994. Minor breaks in the time series may occur when employee organisations change their reporting methods. For example, the previously observed sharp decline in membership figures for some organisations (mainly those under LO) from 2011 to 2012 was due to the inclusion of members without labour market affiliation in earlier reporting. However, this decline has been addressed as of the publication on 19 May 2025, by revising the reported figures downwards for selected organisations for the period 2007–2011.
In addition, the total membership figures for the main organisations may vary over time, as individual employee organisations may join or leave. Furthermore, new organisations emerge while others cease to exist. Organisations are not always able to revise figures retrospectively.
Coherence - cross domain
There is no other Danish statistics on the subject.
Coherence - internal
All employee organisations and Central Organisations receive the same questionnaire. However, not all organisations are able to calculate figures exclusive members with no attachment to the labour market, i.e. students, early retirees and pensioners as well as self-employed.