Title
European Union Labour Force Survey 2014
EU-LFS 2014 contains the Module on Labour market situation of migrants and their immediate descendants.
Geographical Coverage
The EU-LFS 2014 covers "the 28 Member States of the European Union, three EFTA countries (Iceland, Norway and Switzerland), and two candidate countries, i.e. the former Yugoslav Republic of Macedonia and Turkey [(not included in the micro-data)].
All the territories of participating countries are covered, except for Cyprus which only covers the areas under the control of the government of the Republic of Cyprus. Since 2014, also the French overseas departments are covered (Guadeloupe, Martinique, Guyane, La Réunion), with the exception of Mayotte." (Eurostat (2015): Quality report of the European Union Labour Force Survey 2014, p. 5.)
Time Period Covered
The EU-LFS 2014 "is designed as a continuous quarterly survey with interviews spread uniformly over all weeks of a quarter. Each reference week starts on Monday and ends on Sunday. The first week of a year or quarter is defined as the week that includes the first Thursday of the year or the quarter. All countries conduct the LFS as a continuous survey." (Eurostat (2015): Quality report of the European Union Labour Force Survey 2014, p. 5.)
Country Specific Information: EU-LFS 2014
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LV - Latvia
Corresponding National Study
Labour Force Survey
Producer
Latvijas Statistika
Universe
All persons aged 15 to 74 years who are permanently resident in Latvia.
Source Of Sampling Frame
Population Census 2000, Population Register 2009, Demographic Statistics Data Processing System
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Area units
Secondary Sampling Units
Dwellings
Stratification Criteria
Region, urban/rural
Number Of Rotational Groups
4; 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Register,Survey
Percentage Of Proxy Interviews
37.8 %
Design Weight: Target
Person
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
The initial weights are calculated according to the sample design, with all persons within the same PSU having equal design weights. The design weights are adjusted using the data of response level in each strata for each wave.
Coverage Adjustment Weight: Method
Demographic data are broken down by degree of urbanisation, age groups and sex for adjustment of the quarterly weights. For adjustment of the yearly weights demographic data are broken down by degree of urbanisation, age groups and sex as well as in NUTS 3. All persons within the same household have equal initial weights, but the final weights tend to be diverse.
-
LU - Luxembourg
Corresponding National Study
Labour Force Survey/
Erhebung über Arbeitskräfte
Producer
infas Institute for Applied Social Sciences
Universe
Persons registered as residing in one of the Luxembourgian communes.
Source Of Sampling Frame
Set of all telephone numbers
Sampling Design
Probability
- random
- not stratified
- one stage
Primary Sampling Units
Households
Secondary Sampling Units
Not used
Number Of Rotational Groups
0
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
39.4 %
Weighting: Method
Poplation estimates on 1 January are used for weighting the results. Data from the survey are weighted ex post by sex, age classes and nationalty. All persons of these 288 have the same weight, calculated by dividing the population in each stratum by the number of interviewed persons in the same stratum.
-
LT - Lithuania
Corresponding National Study
Labour Force Statistical Survey
Producer
Statistics Lithuania
Universe
All persons usually living in the households of the selected dwellings, including those who are temporarily abroad for a period of less than a year. The population also includes foreign nationals who have been living in Lithuania for at least a year.
Source Of Sampling Frame
Population Register
Sampling Design
Probability
- random
- stratified
- one stage
Primary Sampling Units
Individuals
Secondary Sampling Units
Not used
Number Of Rotational Groups
4, 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
35.1 %
Design Weight: Target
Household
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
The initial household design weights are calculated, taking into account the unequal selection probabilities of the households.
Coverage Adjustment Weight: Method
These are then adjusted by the use of auxiliary information relating to population data on 60 municipalities and the intersection of 13 age-groups, sex and urban/rural.
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HR - Croatia
Corresponding National Study
Labour Force Survey
Producer
Central Bureau of Statistics
Universe
The target population comprises all persons living in private households who usually reside in Croatia or intend to stay in Croatia for at least 12 months.
Source Of Sampling Frame
2011 Population Census
Sampling Design
Probability
- systematic
- stratified
- multi-stage
Primary Sampling Units
Area units
Secondary Sampling Units
Dwellings
Stratification Criteria
Counties, city of Zagreb
Number Of Rotational Groups
4; 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
44.30%
Design Weight: Target
Dwelling
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
As there are 21 counties, multiplying 2 groups (urban and rural) gives 41 groups within counties (as county City of Zagreb is all urban) for defining non-response rates (and calculating response rates in each one). Non-response weights are inverse value of these response rates. They are also equal for each segment. At the end final design weights from both sampling phases are multiplied with non-response adjustment weight in order to get final weights before calibration procedure.
Weighting: Method
Distributions of the 5-year age groups, gender, NUTS2 regions and household size) for the subsample of respondents were calibrated to known auxiliary information from Census 2011. It reduced sampling error, effecting the ‘old’ weights, but in limits of previously defined constraints in CALMAR software. Bounded linear method was used for calibration, and lower limit was set on 0.5, and upper on 3.
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RO - Romania
Corresponding National Study
Romanian Labour Force Survey
Producer
National Instititue of Statistics Romania
Universe
Persons resident in Romania
Source Of Sampling Frame
Census 2002
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Census sections
Secondary Sampling Units
Dwelling clusters
Stratification Criteria
Region, urban/rural
Number Of Rotational Groups
4; 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
24.6 %
Design Weight: Target
Dwelling
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
The responding dweling units are categorised by the characteristics county (NUTS 3) and urban/rural residency.
Coverage Adjustment Weight: Method
The weights are calibrated to the best latest available population totals by region/urban-rural residency, gender, age groupds and the household totals by region, using the SAS macro Calmar. The totals known at population level from current demographic statistics are based on the 2011 Population Census.
-
NO - Norway
Corresponding National Study
Labour Force Survey
Producer
Statistics Norway
Universe
The definition of resident population is the de jure one based on the Central PopulationRegister. It covers private and collective households.
Source Of Sampling Frame
Population Register
Sampling Design
Probability
- random
- stratified
- one stage
Primary Sampling Units
Households
Secondary Sampling Units
Not used
Stratification Criteria
County (NUTS 3)
Number Of Rotational Groups
8
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Register,Survey
Percentage Of Proxy Interviews
16.8 %
Non-response Weight: Method
The estimation is done by a post-stratification method using information from the Central Population Register, the Register of Employees and the Tax Register. The expansion factors are calculated according to the population totals aged 15-74, i.e. the institutional population included.
Coverage Adjustment Weight: Method
The post-stratification adjusted weights are calibrated within each of the 19 counties, which is equivalent to the NUTS3 level, with respect to the marginal totals of the same auxiliary variables.
-
HU - Hungary
Corresponding National Study
Labour Force Survey
Producer
Hungarian Central Statistical Office
Universe
Persons living in the private households in Hungary, included are also household members temporarily absent or living abroad if they have common income/consumption with the surveyed household.
Source Of Sampling Frame
2001 Population and Housing Census
Sampling Design
Probability
- systematic
- stratified
- multi-stage
Primary Sampling Units
Area units
Secondary Sampling Units
Dwellings
Stratification Criteria
Administrative units, size categories of localities
Number Of Rotational Groups
6
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
43 %
Design Weight: Target
Dwelling
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
For any stratum of the sample, the unique design weight is defined as the ratio of the total number of dwellings in the stratum to that in the sub-sample for that stratum.
Coverage Adjustment Weight: Method
Calibrated weights are determined with the method of generalised raking. For each of the 20 geographical units, the calibration variables or controls are totals for age-sex groups, total number of household and total resident population in cities with 50 000+ inhabitants. The calibration is organised so that all members in a sample household have the same calibrated weight as that household.
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FR - France
Corresponding National Study
Questionnaire logement de l’enquête emploi /
Housing Survey of Employment Survey
Producer
National Institute of Statistics and Economic Studies
Universe
The survey covers private households living in their main residences in
in France, except Mayotte. Since the first quarter of 2014, overseas departements (Guadeloupe, Martinique, Guyane, La Réunion) have been covered, with the exception of Mayotte. Mayotte is covered by a specific annual survey.
Source Of Sampling Frame
Tax registers
Sampling Design
Probability
- random
- stratified
- one stage
Primary Sampling Units
Area units
Secondary Sampling Units
Dwellings
Stratification Criteria
French region (NUTS2 - Metrop.) + infra NUTS 3 (DOM)
Number Of Rotational Groups
6
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
26.5 %
Design Weight: Target
Person
Non-response Weight: Method
A correction for non-response is made, using several criteria: size of urban unit, number of rooms in the housing, type of housing (individual house, building…), number of new dwellings and region, income of the households (deciles), age of the inhabitants, social housing or not, rented accommodation or property for Metropolitan France; type of housing, micro-region (infra-NUTS3), being respondent or not during the previous quarter for overseas departments. Another correction for non-response is made using the answers to the “non-response survey” (NRS): the employment and unemployment ratios are adjusted to the ones obtained when including the respondents to the NRS survey within the LFS.
Coverage Adjustment Weight: Method
An adjustment to the population estimates (at the middle of the quarter) by five year age groups and gender, at NUTS 2 level, is made (for each of the 6 independent sub-samples in Metropolitan France, for each department regarding overseas). An adjustment is also made on the number of dwellings and the number of newly-built dwellings, and, for overseas departments, on some geographic and socio-demographic characteristics from the sampling frame.
-
BG - Bulgaria
Corresponding National Study
Labour Force Survey
Universe
Only private households are included. The resident population includes all persons usually residing in Bulgaria, including persons temporarily abroad (less than one year).
Source Of Sampling Frame
2011 Population Census
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Census enumeration units
Secondary Sampling Units
Households
Stratification Criteria
Administrative districts, type of place of residence
Number Of Rotational Groups
4 (2-(2)-2 rotation pattern)
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
30.1 %
Design Weight: Target
Household
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
The initial weights are multiplied by correction factor for households' non-response which is calculated as ratio between the total number of selected households in a stratum and the number of interviewed households from the same stratum.
Coverage Adjustment Weight: Method
The intermediate weights are calibrated to the population estimates by the following variables: at national level by age group, sex and type of place of residence; at districts level by sex and type of place of residence. For calculation of weights the latest available population estimates are used.
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BE - Belgium
Corresponding National Study
Continuous Labour Force Survey /
Ständige Erhebung über Arbeitskräfte /
ENQUÊTE CONTINUE SUR LES FORCES DE TRAVAIL /
DOORLOPENDE ENQUÊTE NAAR DE ARBEIDSKRACHTEN
Producer
economie
Universe
Private households, where at least one person is younger than 77.
Source Of Sampling Frame
National Register of Persons
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Area units
Secondary Sampling Units
Households
Stratification Criteria
Region
Number Of Rotational Groups
0
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
18.9 %
Design Weight: Target
Person
Non-response Weight: Method
Adjustments for non-response are done using a posteriori stratification by province (NUTS 2), sex and age.
Coverage Adjustment Weight: Method
In each of the post-strata thus obtained, a weight is calculated whose numerator is the population at the middle of the quarter according to the National Register of Persons and whose denominator is the number of usable responses.
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DE - Germany
Corresponding National Study
Mikrozensus
Producer
Statistische Ämter des Bundes und der Länder
Universe
The resident population includes all inhabitants with their main place of residence and their secondary residence in the territory of the Federal Republic living in private and collective households. Foreign armed forces and members of the diplomatic corps and their families are excluded.
Source Of Sampling Frame
1) Census data from 1987: survey base for former BRD. 2) Central population register of the German Democratic Republic: data for former DDR. 3) Register of new dwellings.
Sampling Design
Probability
- systematic
- stratified
- one stage
Primary Sampling Units
Dwelling blocks
Secondary Sampling Units
Not used
Stratification Criteria
Region and size of building
Number Of Rotational Groups
4
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
26.1 %
Design Weight: Target
Household
Non-response Weight: Method
A two-stage adjustment procedure is used.
(a) If possible, limited data are collected for households which fail to respond. These data can include: number of members of the household, nationality, and for households comprising only one person: age and sex. From this data, the weightings of respondent households are increased to take account of non-response in the region.
(b) The sample, weighted to take account of non-response, is stratified a posteriori by region, sex, age and nationality and is extrapolated to the population.
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DK - Denmark
Corresponding National Study
Labour market status
Producer
Statistics Denmark
Universe
Persons with domicile in Denmark (excluding Greenland and the Faeroe Islands) according to the Central Population Register.
Source Of Sampling Frame
Central Population Register and the Unemployment Register (further enhanced with information from the labour market register and the income register).
Sampling Design
Probability
- systematic
- stratified
- one stage
Primary Sampling Units
Individuals
Secondary Sampling Units
Not used
Stratification Criteria
Registered unemployment
Number Of Rotational Groups
4; 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Register,Survey
Percentage Of Proxy Interviews
3.5 %
Design Weight: Target
Person
Non-response Weight: Method
The strata are weighted separately. Weighting is performed by using a combination of sex, age group, socio-economic status, income, nationality, level of education, status in the unemployment register, region, and whether the dwelling place was recently changed or not.
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FI - Finland
Corresponding National Study
Finnish Labour Force Survey
Producer
Statistics Finland
Universe
People aged 15 to 74 who are registered as permanently resident in Finland, including those who are temporarily abroad for a period of less than a year, members of the armed forces, and the institutional population. It also includes foreign nationals who have been living in Finland for at least a year.
Source Of Sampling Frame
Total population database, based on the Population Information System of the Population Register Centre
Sampling Design
Probability
- systematic
- stratified
- one stage
Primary Sampling Units
Individuals
Secondary Sampling Units
Not used
Stratification Criteria
Region
Sampling Method
Because the continuous survey sample frame only includes persons aged 15 to 74 years, a separate sample of dwelling units was drawn to correct the frame for elderly persons.
A technical sample of persons aged 75 or more was added to the file of the fifth wave after data collection. This technical sample corrects the sampling frame, which in the continuous LFS is limited to persons aged 15 to 74 years. However, this technical part of the sample is not interviewed. Instead, data are imputed on the assumption that persons aged 75 or more are outside the labour force, together with data available from administrative files.
Number Of Rotational Groups
quarterly rotation pattern of 3-(1)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Register,Survey
Percentage Of Proxy Interviews
54.6 %
Design Weight: Target
Person
Non-response Weight: Method
The 240 post-strata are constructed by sex, age group and region.
Coverage Adjustment Weight: Method
The post-stratified weights are calibrated according to gender, age, group, region, reference week and status in Ministry of Labour's job-seeker register.
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IE - Ireland
Corresponding National Study
Quarterly National Household Survey
Producer
Central Statistics Office Ireland
Universe
The population comprises persons who usually reside on Irish
territory.
Source Of Sampling Frame
Census of Population 2006 (Q1 to Q3 2013) and Census of Population 2012 (Q4)
Sampling Design
Probability
- systematic
- stratified
- multi-stage
Primary Sampling Units
Dwelling blocks
Secondary Sampling Units
Households
Stratification Criteria
Region, urbanization (population density)
Number Of Rotational Groups
5
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
49.3 %
Weighting: Method
The expansion factor is to population totals.
The survey results are weighted to agree with population estimates broken down by age (five-year age groups), sex and region (NUTS 3 regions). Results are then calibrated to broad national totals by broad age groups (0-14 and 15+) and gender.
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AT - Austria
Corresponding National Study
Mikrozensus
Producer
Statistik Austria
Universe
Persons who have their main residence on Austrian territory during the reference week. Only the population in private housholds.
Source Of Sampling Frame
Register of Residents
Sampling Design
Probability
- random
- stratified
- one stage
Primary Sampling Units
Dwellings
Secondary Sampling Units
Not used
Stratification Criteria
Bundesland
Number Of Rotational Groups
5
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
26.1 %
Design Weight: Target
Person
Coverage Adjustment Weight: Method
For estimation of the results weights are calculated using the population counts of the Register of Residents and the household forecasts of Statistics Austria. The weights are calculated using the following criteria: Bundesland (NUTS 2), age groups, nationality, size of households and gender. In a first step, a basic weight is calculated for each person. This is followed by a calibration procedure with iterative proportional fitting. Finally each member of the household gets the same weight.
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CZ - Czech Republic
Corresponding National Study
Labour Force Survey
Producer
Czech Statistical Office
Universe
All persons usually living in the selected dwellings, disregarding the type of their stay there (permanent, temporary or non-registered)
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Census enumeration units
Secondary Sampling Units
Dwellings
Stratification Criteria
Region (districts, Prague 1 district)
Number Of Rotational Groups
5
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
35.9 %
Non-response Weight: Method
The weights are based on post-stratification to 12 age groups, sex and the 77 districts. Demographic figures for each quarter of 2014 were forecasted from the definitive demographic data for end-of-year 2013, taken into account migration and natural increase of population.
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CY - Cyprus
Corresponding National Study
Labour Force Survey
Producer
Federal Statistical Office FSO
Universe
All persons living in private households aged 15 years and older. Persons officially residing in Switzerland for the entire year. Swiss citizens, foreign citizens holding a permanent residence permit or a residence permit valid for at least one year, international civil servants, diplomats and their family members all fall into this category.
Source Of Sampling Frame
Standard Sample, Register of foreigners. From Q2 2014 on, the base used for both subsamples is the SFSO's Sampling Frame for Person and Household Surveys, which contains administrative data provided by cantonal and communal resident's register offices and covers 100% of Switzerland's permanent resident population.
Sampling Design
Probability
- random
- stratified
- one stage
Primary Sampling Units
Households
Secondary Sampling Units
Not used
Stratification Criteria
Districts, urban/rural
Sampling Method
Standard sample + extra sample for foreign persons
Number Of Rotational Groups
4
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
32.00%
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
Weights are adjusted for non-response, and finally the sample is
calibrated on age, sex, marital status, canton of residence, nationality, residence permit, and duration of residence using the calibration software CALMAR.
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SE - Sweden
Corresponding National Study
Labour Force Survey/
Arbetskraftsundersökningen
Producer
Statistics Sweden
Universe
Persons between 15 and 74 who are domiciled in Sweden according to the population register.
Source Of Sampling Frame
Statistics Sweden's Register of the Total Population
Sampling Design
Probability
- systematic
- stratified
- one stage
Primary Sampling Units
Individuals
Secondary Sampling Units
Not used
Stratification Criteria
Sex, age group, region
Sampling Method
Regular LFS sample + supplementary sample
Number Of Rotational Groups
8
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Register,Survey
Percentage Of Proxy Interviews
2.6 %
Design Weight: Target
Person
Design Weight: Method
regression-based with external data
Weighting: Method
The estimates build on regression estimators (GREG) with a set of auxiliary information. The auxiliary variables are sex*age, region (NUTS 3), nationality at birth, information on employed persons by industry and persons who have enrolled at a job-centre as unemployed and are looking for work. The registers which are used to obtain the auxiliary variables are the Register of Total Population, the Employment Register and the National Labour Markets Board's Register of job-seekers.
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SI - Slovenia
Corresponding National Study
Anketa o Delovni Sili
Producer
Statistical Office of the Republic of Slovenia
Universe
The survey covers the whole country. Only individuals in private households are surveyed.
Source Of Sampling Frame
Central Population Register of the Republic of Slovenia
Sampling Design
Probability
- systematic
- stratified
- one stage
Primary Sampling Units
Addresses
Secondary Sampling Units
Not used
Stratification Criteria
NUTS3 regions, size and type of settlement (urban/rural)
Number Of Rotational Groups
5; 3-(1)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
54.7 %
Weighting: Method
The data are weighted for unequal probability of selection and for non-response and post-stratified according to the known population distribution: age, sex and region (NUTS 3 level). The post-stratification is done on a household level, with members of the same household thus receiving identical weights, and benchmarked to population totals. Institutional population is included in population totals.
-
SK - Slovakia
Corresponding National Study
Labour Force Survey/
pracovných síl
Producer
Statistical Office of the Slovac Republic
Universe
Every person aged 15+, living in the household of the selected dwelling without regard to permanent, temporary or unregistered stays.
Source Of Sampling Frame
Census of Population 2011
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Census enumeration units
Secondary Sampling Units
Dwellings
Stratification Criteria
NUTS 4
Number Of Rotational Groups
5
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
48.2 %
Weighting: Method
Data from the survey for all persons participating in the survey were weighted by administrative data on total population by region, sex and age groups. Extrapolation to the population is done at the level of individuals. The population and the sample are the subject of a post-stratification by NUTS 3 administrative region, sex and age groups.
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IS - Iceland
Corresponding National Study
Labour Force Survey
Producer
Statistics Iceland
Universe
The resident population comprises persons registered with domicile in Iceland, excluding persons attached to foreign missions and registered persons living abroad for more than six months, but including Icelandic personnel in missions abroad.
Source Of Sampling Frame
National Population Register
Sampling Design
Probability
- random
- not stratified
- one stage
Primary Sampling Units
Individuals
Secondary Sampling Units
Not used
Stratification Criteria
No stratification.
Number Of Rotational Groups
5; 3-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Register,Survey
Percentage Of Proxy Interviews
0.3 %
Weighting: Method
The a posteriori stratification variables are five-year age groups and sex.
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UK - Great Britain
Corresponding National Study
Labour Force Survey
Producer
Office for National Statistics
Universe
Persons living in private households, including persons who are temporarily absent. In Great Britain, an additional sample is drawn to cover persons living in National Health Service/Hospital Trust accomodation.
Source Of Sampling Frame
Postal adresses / telephone numbers (N Scotl) / housing units (N Irel)
Sampling Design
Probability
- systematic
- stratified
- one stage
Primary Sampling Units
Addresses
Secondary Sampling Units
Not used
Stratification Criteria
By frame
Sampling Method
Northern Ireland: single random sampling design.
For north of Scotland: telephone number is PSU.
Number Of Rotational Groups
5
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
33.7 %
Non-response Weight: Method
The adjustment procedure is based on a three-stage a posteriori stratification. In each case, figures are based on independent demographic estimates.
The stratification variable for the first stage is the Local Authority District or Unitary Authority. This stage makes it possible to make adjustments for different rates of non-response in the various local authority areas and ensures that the results are geographically representative.
The second-stage variables are sex and age group (0-15, each year of age in the 16-24 group and 25 +). This stratification is intended to ensure that the age profile of the 16-24 year olds is correct at national level.
The variables in the third stage are region, sex and five-year age group.
The three stages are applied by means of an iterative procedure designed to ensure that the estimates are consistent with the stratification variable sets.
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IT - Italy
Corresponding National Study
Labour Force Survey
Producer
Italian National Institute of Statistics
Universe
The reference population is the resident population, which is the population recorded in the registry offices in the Italian municipalities.
Source Of Sampling Frame
Municipal registers
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Municipality
Secondary Sampling Units
Households
Stratification Criteria
Size categories of municipalities within NUTS3 region
Number Of Rotational Groups
4; 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
18.2 %
Design Weight: Target
Household
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
Correction factors for the households' non-response are worked out as the reciprocal of the response ratios. Intermediate weights corrected for non-response are then computed multiplying initial weights by these correction factors.
Coverage Adjustment Weight: Method
Starting from intermediate weights, final grossing weights are obtained solving a minimisation problem under constraints. The function to be minimised is the distance between final and intermediate weights; the constraints regard the estimates of some auxiliary variables that have to be equal to the totals in the reference population derived from external sources. Main constraints are population by gender and age groups at NUTS 2 level and population by gender and age groups of different width at NUTS 3 level. Final weights ensure that all members of a given household have the same weight.
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MT - Malta
Corresponding National Study
Labour Force Survey
Producer
National Statistics Office - Malta
Universe
Private households in Malta, including people who are temporarily absent from the usual place of residence.
Source Of Sampling Frame
2011 Census
Sampling Design
Probability
- not stratified
- one stage
Primary Sampling Units
Households
Secondary Sampling Units
Not used
Stratification Criteria
No stratification
Sampling Method
The sampling plan is a one-stage systematic random sample
Number Of Rotational Groups
4, 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
48 %
Coverage Adjustment Weight: Method
A posteriori stratification at one level is performed by sex, age-group and district. This allows the tabulation of estimates at national and district levels. The totals are benchmarked to Census Population Totals of persons living in private households only. For weighting procedures, NUTS 4 is used, gender and 5 year age groups.
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PL - Poland
Corresponding National Study
Polish Labour Force Survey
Producer
Central Statistical Office Warszawa
Universe
The target population covers all persons aged 15 years and over with usual residence in Poland. Persons living in institutional households (army, hospital, prison, hostels etc.) are excluded from the survey if their length of stay in these institutions is planned to be longer than one year. The same applies to persons living permanently or temporarily (for more than one year) in other countries.
Source Of Sampling Frame
Census and Register of housing units
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Census enumeration units
Secondary Sampling Units
Dwellings
Stratification Criteria
Region, urban/rural, urbanization
Number Of Rotational Groups
4; 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
39.1 %
Design Weight: Target
Dwelling
Design Weight: Method
Inverse of Selection Probability
Weighting: Method
The weights are computed using a four-step procedure. First the initial design weights are calculated for dwelling units, i.e., the reciprocals of the selection probabilities for the final sampling units in each stratum. Secondly, the weighted response rates are calculated for sampling units stratified a posteriori by six place-of-residence categories. Thirdly, the initial weights are adjusted by the response rates. The adjusted weights are also final for results concerning households. The final step consists in modifying the adjusted weights using the population estimates stratified a posteriori by the urban-rural division, sex and 12 age groups plus three age groups for children living in the surveyed households.
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PT - Portugal
Corresponding National Study
Labour Force Survey
Producer
Statistics Portugal
Universe
The resident population consists of individuals living in private dwellings during the reference week.
Source Of Sampling Frame
National Dwellings Register (NDR), based on Census 2011
Sampling Design
Probability
- systematic
- stratified
- multi-stage
Primary Sampling Units
Area units
Secondary Sampling Units
Dwellings
Stratification Criteria
Region (NUTS3)
Sampling Method
In the fourth quarter of 2014, all six rotations of the sample will be drawn from the NDR.
Number Of Rotational Groups
6
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
46.8 %
Design Weight: Target
Dwelling
Weighting: Method
The weight is derived as the product of a design weight (which incorporates design information and non-response) and a factor that calibrates the sample to the independent demographic estimates (using a posteriori stratification method by NUTS 2, sex and five-year age groups; NUTS 3 (or groups of NUTS 3) by six age groups; and NUTS 3 (or groups of NUTS 3) by sex).
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CH - Switzerland
Corresponding National Study
SLFS – Swiss Labour Force Survey /
SAKE – Schweizerische Arbeitskräfteerhebung
Producer
Federal Statistical Office FSO
Universe
All persons living in private households aged 15 years and older. Persons officially residing in Switzerland for the entire year. Swiss citizens, foreign citizens holding a permanent residence permit or a residence permit valid for at least one year, international civil servants, diplomats and their family members all fall into this category.
Source Of Sampling Frame
Telephone directory, Register of foreigners. From Q2 2014 on, the base used for both subsamples is the SFSO's Sampling Frame for Person and Household Surveys, which contains administrative data provided by cantonal and communal resident's register offices and covers 100% of Switzerland's permanent resident population.
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Households
Secondary Sampling Units
Not used
Stratification Criteria
Region/size of region (in pop.)
Sampling Method
Standard sample + extra sample for foreign persons
Number Of Rotational Groups
4
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
2.7 %
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
Weights are adjusted for non-response, and finally the sample is calibrated on age, sex, marital status, canton of residence, nationality, residence permit, and duration of residence using the calibration software CALMAR.
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ES - Spain
Corresponding National Study
Economically active population survey
Producer
Spanish Statistical Office
Universe
The population residing in private households is covered, including servants; persons living in collective households and persons who are temporarily absent are sampled via relatives living in private households. Foreign nationals are included in the resident population if they have lived or intend to live in Spain for more than one year. The household concept used is that of the ‘dwelling household’ (all people living in the
dwelling are interviewed).
Source Of Sampling Frame
Census 2011, Population registers
Sampling Design
Probability
- systematic
- stratified
- multi-stage
Primary Sampling Units
Area units
Secondary Sampling Units
Households
Stratification Criteria
Population size of municipality, socioeconomic characteristics of the population
Sampling Method
Units are selected in such a way as to obtain self-weighted samples within each stratum. The first-stage units are selected with probability proportional to the size and second-stage units are selected with equal probability.
Number Of Rotational Groups
6
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
52.6 %
Design Weight: Target
Household
Design Weight: Method
Inverse of Selection Probability
Non-response Weight: Method
Every quarter, population projections by age group and Spanish provinces (NUTS 3) are calculated. Projections by age and region are distributed by stratum in proportion to the population of each stratum. In each stratum, age group and region, the weighting is determined by the ratio of the projection to the sample size.
Coverage Adjustment Weight: Method
The sample is then calibrated in order to adjust to the population distribution. Auxiliary information used is in the form of population estimates by sex and five-year age groups and household size (5 groups of 1, 2, 3, 4 and 5+ inhabitants) at NUTS 2 level (Comunidades Autónomas), the nationality of the population aged 16 and more (national/non-national) at NUTS 2 level and by sex and 3 aggregated age groups (16-29, 30-49, 50+) and region (NUTS 3 or provinces). A linear weighting method is used, in which each member of the household aged 16 years and over has the same weight.
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NL - Netherlands
Corresponding National Study
Labour Force Survey/
Enquête Beroepsbevolking
Producer
Statistics Netherlands
Universe
The resident population comprises persons residing in the Netherlands.
Source Of Sampling Frame
The survey base is a list of all addresses drawn up by the postal services in combination with the Population Register.
Sampling Design
Probability
- systematic
- stratified
- multi-stage
Primary Sampling Units
Municipality
Secondary Sampling Units
Addresses
Stratification Criteria
Region (Corop), employmentexchange regions
Number Of Rotational Groups
5
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
49.7 %
Non-response Weight: Method
"In the first stage all respondents are assigned an inclusion weight. These inclusion weights are calculated in such a way that unequal inclusion probabilities that occur because of the sampling method are corrected. In the second stage final weights are determined. In this stage biases because of nonresponse are reduced. For this, information on gender, age, ethnic background, place of residence and some other regional classifications are used. In addition, administrative 40 Labour Force Survey in the EU, Candidate and EFTA countries, 2014 sources on the income and registration at unemployment office are used. Also information on the correlation in the panel-overlap between subsequent quarters is used and all waves together are weighted in one step.
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EE - Estonia
Corresponding National Study
Estonian Labour Force Survey
Producer
Statistics Estonia
Universe
The target population comprises all persons aged 15-74 years with permanent residence in Estonia, i.e. those who have lived or intend to live in Estonia for more than one year.
Source Of Sampling Frame
Population Register
Sampling Design
Probability
- systematic
- stratified
- one stage
Primary Sampling Units
Individuals
Secondary Sampling Units
Not used
Stratification Criteria
Group of regions by population size
Number Of Rotational Groups
4; 2-(2)-2
Date of Data Collection
Continuous survey
Participation Mandatory
No
Type Of Data Source
Survey
Percentage Of Proxy Interviews
38.2 %
Design Weight: Method
Household
Non-response Weight: Method
Inverse of Selection Probability
Coverage Adjustment Weight: Method
For non-response adjustment the non-response correction factors are computed. The homogeneous response groups of reasonably uniform size of sampled households are formed on the basis of the place of residence of the household according to the non-response rate in the region. Within each group the correction factor is inversely proportional to the overall response rate in the region.
Weighting: Method
The weights are calibrated so that they produce exact population numbers in certain subgroups known from demographic data (including institutional population). For working-age persons the subgroups by sex, age, place of residence and Estonians/non-Estonians are considered. For this purpose the linear consistent weighting method is applied. For non-working-age persons the non-response adjusted household's weights are calibrated by sex and age.
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EL - Greece
Corresponding National Study
Labour Force Survey
Producer
Hellenic Statistical Authority (EL.STAT)
Source Of Sampling Frame
Census 2001
Sampling Design
Probability
- random
- stratified
- multi-stage
Primary Sampling Units
Area units
Secondary Sampling Units
Dwellings
Stratification Criteria
Region (NUTS3)
Number Of Rotational Groups
6
Date of Data Collection
Continuous survey
Participation Mandatory
Yes
Type Of Data Source
Survey
Percentage Of Proxy Interviews
39.2 %
Design Weight: Target
Household
Design Weight: Method
Inverse of Selection Probability
Coverage Adjustment Weight: Method
The survey weights are adjusted every quarter so that the estimated total population coincides with the estimated (from the projection of the 2001 census results) population by region (NUTS 2), age groups and sex (for the members of private households).