287385
/en/arbeid-og-lonn/statistikker/akumnd/maaned
287385
statistikk
2017-10-26T08:00:00.000Z
Labour market and earnings;Labour market and earnings
en
akumnd, Labour force survey, seasonally-adjusted figures, LFS, labour market, employees, unemployed, economically active, man-weeks worked, labour forceEmployment , Unemployment , Labour market and earnings
true

Labour force survey, seasonally-adjusted figures

Updated

Next update

Key figures

4.1 %

unemployed persons in per cent of the labour force (seasonally adjusted) in August (average of July-September)

Employment and unemployment for persons aged 15-74. Seasonally-adjusted series
Change
August 20171May 2017 - August 2017
1Three-month average named by the middle month.
Unemployed persons114 000-6 000
In per cent of the labour force4.1-0.2
 
Employed persons2 651 000-1 000
In per cent of the population66.8-0.2

See more tables on this subject

Table 1 
Employment and unemployment for persons aged 15-74 years, seasonally adjusted, three-months moving average. Absolute figures in 1000 and in per cent

Employment and unemployment for persons aged 15-74 years, seasonally adjusted, three-months moving average. Absolute figures in 1000 and in per cent
Population, not seasonally adjustedLabour forceLabour force in per cent of the populationEmployed personsEmployed persons in per cent of the populationUnemployed persons (LFS)Unemployed persons(LFS) in per cent of the labour forceRegistered unemployed (NAV)1Registered unemployed + government measures (NAV)1
1Theses figures are monthly, and not three-months moving average.
August 20143 8552 73370.92 63368.31003.77687
September 20143 8612 73670.92 63568.21023.77787
October 20143 8662 73770.82 63268.11053.87687
November 20143 8712 75771.22 65368.51043.87687
December 20143 8742 76471.42 65868.61063.87587
January 20153 8772 76771.42 65668.51104.07687
February 20153 8802 76071.12 64668.21144.17788
March 20153 8832 76071.12 64568.11154.27889
April 20153 8872 76671.22 65068.21174.27890
May 20153 8902 77471.32 65568.31194.37990
June 20153 8932 77471.22 65168.11224.48092
July 20153 8962 76971.12 65068.01194.38195
August 20153 9002 77871.22 65268.01264.58296
September 20153 9042 77371.02 64567.81284.68397
October 20153 9092 78071.12 65167.81294.68498
November 20153 9132 77771.02 65067.71284.68499
December 20153 9162 79171.32 66468.01284.68499
January 20163 9182 79771.42 66368.01344.885101
February 20163 9212 79271.22 66167.91314.785101
March 20163 9242 78270.92 65367.61304.786101
April 20163 9262 77770.72 64967.51284.684100
May 20163 9292 77170.52 64067.21314.785101
June 20163 9322 77870.62 64467.21334.884102
July 20163 9362 78670.82 64867.31385.084102
August 20163 9392 78770.82 65167.31374.983102
September 20163 9422 79270.82 65867.41354.882101
October 20163 9452 78370.52 65067.21324.882101
November 20163 9482 76870.12 63866.81304.783102
December 20163 9502 76169.92 63966.81224.482101
January 20173 9532 75569.72 63966.81164.281100
February 20173 9552 76770.02 64866.91204.38099
March 20173 9572 77170.02 64766.91244.57898
April 20173 9592 77170.02 64666.81254.57797
May 20173 9612 77170.02 65266.91204.37595
June 20173 9642 76469.72 64666.71194.37494
July 20173 9672 76769.82 65266.91154.27393
August 20173 9692 76569.72 65166.81144.17292
September 2017..............7291

About the statistics

The seasonally-adjusted figures from the Labour Force Survey provide information on the development of employment and unemployment. In order to reduce uncertainty, the series are three-month moving averages. Changes are therefore calculated from figures published three months earlier The series are published every month.

Definitions

Definitions of the main concepts and variables

Concepts and definitions are in accordance with recommendations given by the International Labour Organization (ILO) and EU/Eurostat.

According to the international recommendations persons above a specified age should be classified by their attachment to the labour market in a specified, short period, either a day or a week. In the Norwegian LFS the reference period is one week, and the sample of persons are classified in relation to their situation in that reference week.

Employed persons are persons aged 15-74 who performed work for pay or profit for at least one hour in the reference week, or who were temporarily absent from work because of illness, holidays etc. Conscripts are classified as employed persons. Persons engaged by government measures to promote employment are also included if they receive wages. Persons laid off 100 per cent with a continuous duration of until three months are defined as employed, temporarily absent.

Unemployed persons are persons who were not employed in the reference week, but who had been seeking work during the preceding four weeks, and were available for work in the reference week or within the next two weeks (in 1996-2005 one should be available within two weeks following the time of interview, and until 1996 one should be able to start working in the reference week). Persons laid off 100 per cent are defined as unemployed after three continuous months of leave.

Persons in the labour force are either employed or unemployed. The remaining group of persons is labelled not in the labour force .

Man-hours worked include all actual working hours, i.e. including overtime and excluding absence from work.

Age is given in complete years at the end of the survey week.

Registered unemployed is defined as persons who are seeking income-earning work through Norwegian Labour and Welfare Service (NAV) and who are available to carry out such work. In addition, these persons must not have had any work for pay or profit in the preceding two weeks.

Participants of ordinary labour market measures are jobseekers who, during the reference period, took part in a measure aimed for ordinary jobseekers.

Standard classifications

Not relevant

Administrative information

Name and topic

Name: Labour force survey, seasonally-adjusted figures
Topic: Labour market and earnings

Next release

Responsible division

Division for Labour Market Statistics

Regional level

The whole country.

Frequency and timeliness

Frequency: Monthly figures Timeliness: Seasonally adjusted figures from the Labour Force Survey (LFS) are normally published 4 weeks after the end of the month. Due to the three-month moving average smoothing of the time series, the figures are in reality presented with a time lag of one month. See the advance release calendar for coming statistics the next 4 months.

International reporting

At the time of each publication, unemployment and employment figures are being sent to Eurostat (seasonally unadjusted, adjusted and trend figures, by age groups and sex).

Microdata

The basic material (survey results from the interviewers) as well as the statistical files (on the basis of revision and estimation procedures) are stored.

Background

Background and purpose

The main purpose of the survey is to provide data on employment and unemployment, and data on the labour force participation for the total the population.

Users and applications

The surveys give information to the Labour Market Authorities and other users about the situation on the labour market, and provide data for labour force research and forecasts, as well as for international organizations and mass 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.

For more information, see Principles for equal treatment of users in releasing statistics and analyses.

Coherence with other statistics

Statistics on unemployed persons at the Employment Offices and government measures to promote employment are compiled by the Norwegian Labour and Welfare Administration (NAV) on the basis of the job applicant register (ARENA).

The figures on unemployment based on the LFS differ from the figures on unemployed persons registered at the Employment Offices. The LFS-figures also include unemployed persons not registered at the Employment Offices, some of the participants in government measures to promote employment and some of the disabled persons. On the other hand, some of the registered unemployed are not classified as unemployed in the LFS, on the basis of the information given on seeking and availability for work. The results from the LFS are used in the National Accounts Statistics. For statistics at regional levels (counties and municipalities), the Registerbased Employment Statistics are recommended. These statistics also give figures on employees who are immigrants. Statistics Norway also produces statistics on selected industries based on data from the establishments, containing figures on employment, compensation of employees, value of production and capital formation etc. These statistics contain more detailed information about each industry than it is possible to give from the LFS and the National Accounts Statistics.

As from 2006 persons on lay-off (until 3 months) are no longer classified as unemployed, but as employed persons (temporarily absent from work) in the LFS, while they still are classified as unemployed in the register based statistics. However, if the period of lay-off exceeds 3 months, they are classified as unemployed in the LFS as well.

The Population and Housing Censuses (each 10th year) give statistics on employment during the last 12 months, in addition to the situation in a specified reference week. As from 2001 onwards employment data based on administrative registers are used. Statistics on labour conflicts and working days lost are compiled by Statistics Norway on the basis of information supplied mostly by the labour and employers's organizations. The Surveys of Level of Living (by Statistics Norway) give information on physical working environment as well as organizational working conditions.

The LFS only includes persons who are registered as residents in the population register. Persons working in Norwaywho are not registered as permanent residents or who are planning to stay for less than six months are not included in the employment figure in the LFS. If these people lose their job it does not count as a fall in employment or a rise in unemployment. In national accounts figures (NR), employed non-residents are included in the employment figure as long as they work in an establishment in Norway. If employment decreases in this group it will count as a fall in employment in NR. Statistics Norwaypublishes separate figures for all registered non-residents once a year. See short-term immigrants .

Legal authority

The Statistics Act §§ 2-1, 2-2 and 2-3.

EEA reference

Council Regulation (EC) nos 577/98, 1991/2002 and 2257/2003, and Commission Regulation nos 1575/2000, 1897/2000, 2104/2002, 430/2005 and 377/2008.

Production

Population

The total population aged 15-74 with permanent residence in Norway is covered by the LFS. The target population is based on the Central Population Register, which is the official administrative register of residents. Residents are defined as those expected to live here over 6 months. The LFS does not cover employees who commute from abroad, or people with a residence permit of less than 6 months duration. The observation unit is person.

Data sources and sampling

The main source for the LFS is quarterly, representative sample surveys.

The statistics on registered unemployment and labour market measures are based on data from Norwegian Labour and Welfare Service’s (NAV) administration system, ARENA. The register includes persons registered as unemployed, persons on ordinary labour market measures, and persons with a reduced capacity to work.

The sampling design is a county-stratified systematic sampling (with assumed random sorting) of family clusters from our Central Population Register. The sampling fraction varies somewhat between the 19 counties in Norway, giving smaller counties higher representation. The sample consists of about 12 000 family units or 24 000 persons each quarter. Each family member aged 15-74 participates in the survey, answering questions about their situation during a specified survey week. Each family participates every third months over a 2 year period. This means the survey is designed as a rotating panel, where families suppose to participate 8 times.

For more information, please cf. " Labour Force Survey 2001 (NOS C748). " (NOS C748).

Collection of data, editing and estimations

All interviews are done by telephone. As from 1 st quarter 1996 the data are collected weekly, i.e. the LFS became a continuous survey. Up to 1 st quarter 1996 (from 2 nd quarter 1988) the surveys were based on one week each month.

Information from previous interviews are used while asking about any changes in the situation, instead of the same, comprehensive data collection every time. For the coding of industry, information from some registers is also used. Demographic data are collected from the Central Population Register, and data on education are based on a register of individual data collected by Statistics Norway from the educational institutions (but questions are also asked to get more updated information).

The respondent is usually the same person as the observation unit (but proxy interviews are done if it is not possible to get in contact with the observation unit; 14-15 per cent of the interviews are done by asking near family members). Data are collected weekly, i.e. the LFS is a continuous survey (all weeks are covered). Up to 1st quarter 1996 (from 2nd quarter 1988) the survey was based on one reference week each month, and in previous years on one week each quarter. Participation in the survey is compulsory, but compulsory fines are not used.

As the data collection is made by use of computer-assisted interviews, some procedures for electronic control of the registration of answers are included in the questionnaire, for example concerning the number of working hours during the reference week. In some cases the interviewers become a "warning" by recording an answer, in other cases maximum or minimum values have been set beforehand.

Absolute figures from the LFS are presented as estimated figures for the total population aged 15-74. The accurate number of persons in the population being represented by one person in the sample, the inflation factor, varies, with 140 on an average in quarterly figures. The LFS-calculations are adjusted by the use of information from the Central Population Register, the Register of Employees and the Tax Register. The weights (inflation factors) are adjusted three times with calibration on counties, register employment, 12 age groups and gender in the final stage, after post-stratification nationally on 3 groups of industry divided register employment, 12 age groups and gender. The initial weights take account of different sampling and non-response proportions in each of our 19 counties.

Seasonal adjustment

Seasonally adjusted data are calculated by using the X12-ARIMA method. The adjustment is done indirectly. The time series of employed persons and unemployed persons are seasonally adjusted separately by age over/under 24 years. The time series of man-weeks worked are seasonally adjusted separately in 3 groups: persons 24 year and less, male more then 24 years and female more then 24 years. The series of registered unemployed at the Employment Office and the series of registered unemployed at the Employment Office plus participants in labour market measures seasonally adjusted separately in 4 groups: gender cross classified by age over/under 24 years. All the seasonally adjusted subgroup series are summed up for totals afterwards. The official seasonally adjusted figures divided by age groups are broken down into gender-divided figures by utilizing monthly gender distributions calculated from trend-cycle figures from additional unofficial seasonal adjustments of the LFS.

Regression models in X-12-ARIMA pre-adjust the series, where we define the explanatory variables for holidays not falling on weekdays in the same month in LFS every year and for outliers. The seasonally adjusted time series for employed persons over 24 year and unemployed persons over 24 year are pre-adjusted if Easter is in March. Due to sensitivity to single holidays or common days off, the man-weeks worked series in addition are pre-adjusted for 2 nd Easter day, May 1 st , May 17 th , Whit Monday and Ascension Day. (We also take account of the effect when two of these days occur on the same date, for instance Ascension Day on May 17 th in 2007 and 2012 and on May 1 st in 2008).

In addition we pre-adjust man-weeks worked series for the number of common days off that falls on week days in December, and the number of normal day in the week between Christmas and New Year's Eve that falls in December/January in the LFS. Also we pre-adjust man-weeks worked series for the number of week days in June the in the LFS falls in July, due to the fact that we don’t divide reference weeks (Monday &– Sunday) between months in the LFS like it is done in the calendar. All regression variables are deseasonalized by subtracting the long term monthly average. Also the regression variables are fine tuned by a week multiplier to take account for that some months represent 4 reference weeks and other 5 reference weeks.

Only 3-months moving averages of the seasonally adjusted time series are published.

For more information, see About seasonal adjustment further down.

Confidentiality

Not relevant

Comparability over time and space

Most of the time-series from the LFS are comparable over time. Breaks in the series up to 2001 are described in the publication Labour Force Survey 2001 (NOS C748).

The concepts in LFS are defined in accordance with international recommendations, cf item 4.1, to ensure comparability among the countries.

As from 2006 the LFS was revised, mainly to be in accordance with the EU-requirements based on new ILO recommendations. Some definitions and parts of the questionnaire were changed, and some new variables were added. As from 2006 age is defined as completed years at the time of the reference week, instead of completed years at the end of the year, as earlier. Moreover the lower age limit to be covered by the survey was lowered from 16 to 15, in accordance with the surveys in other countries.

These changes from 2006 led to breaks in the time-series for the LFS estimates. The revised survey gives some lower estimates for unemployment (1 000 persons as an annual average for 2006) and some higher estimates for employment (8 000 in 2006). A break in the time series also occured for the estimates of actual working hours per week and man-hours worked. For more information, please cf. http://www.ssb.no/aku_en/. Quarterly data for 2006 are published according to both the revised and the unrevised LFS, in order to improve the comparability for the figures between 2006 and 2005. The breaks in the time-series were most significant for figures divided by age groups.

Accuracy and reliability

Sources of error and uncertainty

In all surveys errors may occur in connection with both the collection and the processing of data. The use of proxy interviews (asking near family members instead of the observation unit) often increase the problems of measurement. As an average the employment is underestimated because of proxy interviews.

The non-response rate was approximately 10-12 per cent in the years 1972-1991, and for the next six years just 6-8 per cent. From 1998 onwards the non-response has increased gradually, up to approximately 20 per cent in 2012.

Correction for total non-response is done in the estimating procedure. Partial non-response is adjusted for some variables.

Variance

The estimates from the LFS are based on a sample of family units. Somewhat different results might have been obtained if a different sample or if a complete census had been taken using the same questionnaires, interviewers, processing, etc. as those actually used in the LFS. The uncertainty introduced by sampling is called the sampling error or standard deviation of the estimates. In StatBank table 09937 you will find standard deviation of the estimates and coefficient of variations for quarterly figures of level and change from the previous quarter for all the LFS variables and groups that are seasonally adjusted.

The regression models pre-adjust some of the observations that are seasonally adjusted. There are uncertainties connected to all methods of both seasonal adjustment and pre-adjustment.

Constructed figures for the age group 15 – 19 years for January 2007, and the first 7 months of 2008

Due to an error in the data collection, the 15-year-olds were not interviewed in January 2007, and the first half of 2008. Also in July 2008 the 15-year-olds were under represented in the sample. Constructed figures for employed and unemployed persons and man-weeks worked are therefore used for these months for the age group 15 – 19 years.

Revision

Figures are audited, due to seasonal adjustments. For more information on the audit procedures, see About seasonal adjustment.

About seasonal adjustment

General information on seasonal adjustment

Monthly and quarterly time series are often characterised by considerable seasonal variations, which might complicate their interpretation. Such time series are therefore subjected to a process of seasonal adjustment in order to remove the effects of these seasonal fluctuations. Once data have been adjusted for seasonal effects by X-12-ARIMA or some other seasonal adjustment tool, a clearer picture of the time series emerges.

For more information on seasonal adjustment: metadata on methods: seasonal adjustment

Why seasonally adjust these statistics?

Due to fixed and movable holydays and holidays in July and December the figures of man-weeks worked vary across the year. Also the number of employed persons and unemployed persons vary across the year, especially for the young people. Among other matters this is because of summer substitute and young people searching for summer jobs.

Seasonally adjusted series

We seasonally adjust 2 age-divided series (more/less than 24 year) separately for employed persons and unemployed persons, and add the two series afterwards.

For man-weeks worked we seasonally adjust 3 gender- and age-divided series: persons 15 – 24  years, males 25 – 74 years and females 25 – 74 years.

Due to no sample uncertainty, Registered unemployed and registered unemployed + government measures are also seasonally adjusted as a supplement to the LFS. The Register-figures are seasonally adjusted separately for 4 gender- and age divided (more/less than 24 year) series.

Pre-treatment

Pre-treatment is an adjustment for variations caused by calendar effects and outliers.

Running a detailed pre-treatment. This means using models which are specially adapted for the pre-treatment of the raw data for a given series.

Calendar adjustment

Calendar adjustment involves adjusting for the effects of working days/trading days and for moving holidays. Working days/trading days are adjustment for both the number of working days/trading days and for that the composition of days can vary from one month to another.

We perform calendar adjustments on all series showing significant and plausible calendar effects within a statistically robust approach, with RegARIMA.

Methods for trading/working day adjustment

No correction.

Comments : LFS is surveying persons attachment to the labour market in whole reference weeks. The reference weeks are not split to follow the exact months of the calendar. Therefore, all the monthly data files include as many Mondays as Tuesdays and so on. The monthly data files include either 4 or 5 reference weeks, and the inflation factors adjust fore that. Due to this the number of working days in a month is only affected by holidays and national days off.

Correction for moving holidays

Correction based on an estimation of the duration of the moving holidays effects, specifically adjusted to Norwegian circumstances.

Comments :

The seasonally adjusted time series for man-weeks worked are pre-adjusted if Easter is in March.

Due to sensitivity to single holidays or common days off, the man-weeks worked series in addition are pre-adjusted for 2 nd Easter day, May 1st, May 17th, Whit Monday and Ascension Day. (We also take account of the effect when two of these days occur on the same date, for instance Ascension Day on May 17th in 2007 and 2012 and on May 1st. in 2008).

In addition we pre-adjust man-weeks worked series for the number of common days off that falls on week days in December, and for the number of normal days in the week between Christmas and New Year's Eve that falls in December/January in the LFS. All regression variables are deseasonalized by subtracting the long term monthly average. Also the regression variables are fine tuned by a week multiplier to take account of that some months represent 4 reference weeks and other 5 reference weeks.

National and EU/euro area calendars

Use of the Norwegian calendar

Comments : We also take account of the fact that LFS don’t divide reference weeks (Monday – Sunday) between months, like in the ordinary calendar. For instance the holiday May 1 st may in the LFS be in April. Correspondingly may New Year's Day be in December in the LFS.

Treatment of outliers

Outliers, or extreme values, are abnormal values of the series.

Outliers are detected automatically by the seasonal adjustment tool. The outliers are removed before seasonal adjustment is carried out, and then reintroduced into the seasonally adjusted data.

Comments : Only additive outliers are detected automatically.

Model selection

Pre-treatment requires choosing an ARIMA model, as well as deciding whether the data should be log-transformed or not.

Automatic model selection by established routines in the seasonal adjustment tool.

Comments : The pickmdl procedure in Version 0.3 of X-12-ARIMA is used with the standard method (=first) in the yearly identification of ARIMA models. (Then these automatically identified models are hard coded in the specification files.)

In the list of ARIMA models that are checked in procedure pickmdl, 3 extra ARIMA models are included in order to possibly take better account of the data acquisition in the LFS where interviewees are interviewed every 3 months for 2 year. The extra ARIMA models are:

(0,1,[1,3])(0,1,1)12

(0,1,3)(0,1,1) 12

(0,1,1)1(0,0,1)3(0,1,1)12

Decomposition scheme

The decomposition scheme specifies how the various components – basically trend-cycle, seasonal and irregular – combine to form the original series. The most frequently used decomposition schemes are the multiplicative, additive or log additive.

Automatic decomposition scheme selection.

Seasonal adjustment

Choice of seasonal adjustment approach

X-12-ARIMA Version 0.3

Consistency between raw and seasonally adjusted data

Impose the equality over the year of seasonally adjusted data to original data (e.g. sum or average).

Consistency between aggregate/definition of seasonally adjusted data

In some series, consistency between seasonally adjusted totals and the original series is imposed. For some series there is also a special relationship between the different series, e.g. GDP which equals production minus intermediate consumption.

Impose the equality between aggregated series and the component series.

Comments : The labour force is not seasonally adjusted. The labour force, seasonally adjusted is defined as the sum of employed persons, seasonally adjusted and unemployed persons, seasonally adjusted.

The equality is imposed by indirect approach.

Direct versus indirect approach

Direct seasonal adjustment is performed if all time series, including aggregates, are seasonally adjusted on an individual basis. Indirect seasonal adjustment is performed if the seasonally adjusted estimate for a time series is derived by combining the estimates for two or more directly adjusted series.

Indirect approach where the seasonal adjustment of components occurs using the same approach and software, and then totals are derived by aggregation of the seasonally adjusted components.

Horizon for estimating the model and the correction factors

When performing seasonal adjustment of a time series, it is possible to choose the period to be used in estimating the model and the correction factors. Correction factors are the factors used in the pre-treatment and seasonal adjustment of the series.

The whole time series is used to estimate the model and the correction factors

Comments : Due to a major revision of the LFS in 2006, we now let the time series start in 2006.

Audit procedures

General revision policy

Seasonally adjusted data may change due to a revision of the unadjusted (raw) data or the addition of new data. Such changes are called revisions, and there are several ways to deal with the problem of revisions when publishing the seasonally adjusted statistics.

Seasonally adjusted data are revised in accordance with a well-defined and publicly available revision policy and release calendar.

Comments :
Revisions second months in the quarter
.
The figures from the first months in the quarter are preliminary. They are re-estimated, at the same time as the data from the second months in the quarter are estimated, supplemented with the extra interviewees that we got after the preliminary deadline and with more up to date or better auxiliary register variables. For the re-estimation, also more up to date auxiliary information about the whole population from the Register of Employee and the Central Population Register are utilized.

Quarterly revisions . The figures from the first two months in the quarter are preliminary. They are re-estimated at the end of the quarter supplemented with the extra interviewees that we get after the preliminary deadlines and with better auxiliary register variables. For the re-estimation, also more up to date auxiliary information about the whole population from the Register of Employee are utilized.

Yearly revisions . After seasonal adjustment, the levels are corrected to make the annual averages of the seasonally adjusted figures equal to the corresponding unadjusted figures from the LFS. The annual averages of a year are not ready until we publish the 4 th quarter figures. At that point we use new factors of level correction. Until the 4 th quarter publication is available, preliminary level correction factors from last year have to be used. For the estimation of the 4 th quarter also more up to date auxiliary information about the whole population from the annual Tax Register are utilized.

Concurrent versus current adjustment

Partial concurrent adjustment
The model, filters and calendar regressors are re-identified once a year and the respective parameters and factors re-estimated every time a new or revised data becomes available.

Comments : Additive outliers are detected automatically and parameters re-estimated every time new data becomes available.

Horizon for published revisions

The entire time series is revised in the event of a re-estimation of the seasonal factors.

Quality of seasonal adjustment

Evaluation of seasonally adjustment data

Continuous/periodical evaluation using standard measures proposed by different seasonal adjustment tools.

Quality measures for seasonal adjustment

For most of the series, a selected set of diagnostics and graphical facilities for bulk treatment of data is used.

Table of quality measurement for this statistics.

For more information on the quality indicators in the table see: metadata on methods: seasonal adjustment

Special cases

Seasonal adjustment of short time series

All series are sufficiently long to perform an optimal seasonal adjustment.

Comments : As from 2006 the LFS was revised, among other things the lower age limit covered by the survey was lowered from 16 to 15. In order to avoid breaks in the series, we start all the time series in 2006.

Treatment of problematic series

Problematic series are treated in a special way only when they are relevant. The remaining series are treated according to normal procedures.

Comments : Due to large random variation (sample uncertainty) and small seasonal variation, we do not seasonally adjust all the main variables of the LFS gender divided. This is the case for unemployment, employment and for Employed persons man-weeks worked for persons 15-24 years. Afterwards, gender divided figures are constructed from seasonally adjusted figures by utilizing monthly gender distributions calculated from trend-cycle figures from additional unofficial seasonal adjustments of the LFS.

Posting procedures

Data availability

Three months moving averages of seasonally adjusted data and trend are available.

All metadata information associated with an individual time series is available.

Historical data are available to enable revision analysis.

Easily retrieve and integrate Statistics Norway’s seasonally adjusted LFS -data with your own systems with API

Comments : In order to reduce the uncertainty, the presented series are three months moving averages of the seasonally adjusted figures. For instance the figure from September is the average of the estimates from August - October.

See previous releases for historical data.

Press releases

Three months averages of seasonally plus working day adjusted series and trend-cycle series are released.

For each series, some quality measures of the seasonal adjustment are presented.

Contact