Labour market and earnings
arbkonfl, Work stoppages, strike, lockout, working days lostWorking environment, sickness absence, strikes and lockouts, Labour market and earnings

Work stoppages

As from 6 November 2018 the statistics is published with Trade union members and strikes.


Key figures

8 942

working days were lost as a result of strikes or lock-outs in 2017

Main figures of work stoppages (strikes or lock-outs)
Work stoppages1071410
Wage earnings in wage stoppages8 9838318 858401
Working days lost148 00925 329165 7988 942

About the statistics

The statistics cover industrial disputes, or work stoppages (as a result of strikes or lock-outs), of at least one day's duration. The number of disputes per year is calculated based on the number of trade union federations or confederations that have had groups of employees involved in a work stoppage. As a rule, years with mid-term settlements, have fewer work stoppages than years with main settlements.


Definitions of the main concepts and variables

Work stoppages The statistics cover labour disputes, or work stoppages, of at least one day's duration. The number of disputes per year is computed from the number of trade union federations or confederations that have had groups of employees involved in a work stoppage. Strikes that are discontinued and later resumed for the same reason count as one strike unless where the interruption lasts more than two months. A dispute resumed after more than two months counts as a new strike. A dispute that occurs one year and continues the next is included in both years, i.e. as two strikes. There are two types of work stoppages, strike or lock-out. A work stoppages defines as a temporary work stoppage starting up of a group of employees (strike) or one or several employers (lock-out) to force a demand. following types of strikes are covered: legal strikes, illegal strikes, sympathy strikes, political or protest strikes, general strikes, work stoppages started by employees,Lockout som konfliktmiddel er arbeidsgiversidens svar på streiker. En lockout innebærer at arbeidstakere utestenges fra arbeidet inntil partene er blitt enige om en måte å løse uoverensstemmelsen på.

Wage earners Numbers of wage earners who are involved in work stoppages meanes permanent employee, temporary employee, seasonal worker and part-time employee. Part-time emplyee are counted as full-time employee. Employees there are absent owing to illness or are permitted and unpaid familymembers are noe included in the statitics.

Numbers of work-days lost Duration of an industrial disputes containes in numbers of work-days lost, i.e. working-days a week to the actual group in work stoppages, not calendar days.

Standard classifications

Industrial classification. A key component of the wage statistics is classification by industry in accordance with the Standard Industrial Classification (SIC2002) , which is the Norwegian version of the International Standard Industrial Classification (SIC94). More information in NOS D 383 Standard Industrial Classification .

Administrative information

Name and topic

Name: Work stoppages
Topic: Labour market and earnings

Responsible division

Division for Labour Market and Wage Statistics

Regional level

National level.

Frequency and timeliness


International reporting



Not relevant


Background and purpose

The purpose of the statistics is to provide an overview of the numbers of work stoppages, working days lost and the number of members who are involved in work stoppages. Statistics Norway have since 1922, except of the years 1940 - 1944, been produced annually statistics of work stoppages.

Users and applications

Major users are research institutes and the media.

Equal treatment of users

No external users have access to the statistics and analyses before they are published and accessible simultaneously for all users on ssb.no at 08 am. Prior to this, a minimum of three months' advance notice is given in the Statistics Release Calendar. This is one of Statistics Norway’s key principles for ensuring that all users are treated equally.

Coherence with other statistics

The statistics are closely associated to the statistics of associations of wage earners and mployers associations. Information about the number of members, and any work stoppages are collected on the same questionnaire.

Legal authority

None. Voluntary census.

EEA reference




The statistics cover industrial disputes, or work stoppages, which are affected by employees or one or several employers. A work stoppages defines as a temporary work stoppage starting up of a group of employees (strike) or one or several employers (lock-out) to force a demand.

Data sources and sampling

Statistics Norway questionnaire "Members of employers' associations and trade union organizations and work stoppages", particulars from Confederation of Norwegian Business and Industry and The Norwegian Federation of Trade Unions and The population is established by using the industrial classification in Statistics Norway's Central Register of Establishments.

Total. Statistics Norway send questionnaire to employers' and nation-wide associations for wage earners that assist their members in wage agreements and wage negotiations as well as the main associations to which the individual organizations belong.

Collection of data, editing and estimations

The statistic is a voluntary with 31 December as the referenceperiod. In addition Riksmeklingsmannen column with information about work stoppages.

Control and revision of the information is manually and aims to secure the consistency of the information from one year to another. The organizations are contacted to clarify any uncertainties.

Seasonal adjustment

Not relevant


Not relevant

Comparability over time and space

The wage statistics are comparable back to 1922.

Accuracy and reliability

Sources of error and uncertainty

The statistics are based on a census, thereby avoiding uncertainty associated with sample variance and non-response associated with sample survey.

Measurement errors can mainly occur because the respondent misunderstands what is included in and consequently reported in each column on the form or because it is very difficult for the respondent to find the information requested.


Not relevant