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Labour Force Survey 2011

Bulgaria, 2011
Reference ID
BGR_2011_LFS_v01_M
Producer(s)
National Statistical Institute
Metadata
DDI/XML JSON
Created on
Apr 07, 2014
Last modified
Mar 29, 2019
Page views
5837
Downloads
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  • Identification
  • Scope
  • Coverage
  • Producers and sponsors
  • Sampling
  • Data collection
  • Data Access
  • Disclaimer and copyrights
  • Contacts
  • Metadata production

    • Identification

    Survey ID number

    BGR_2011_LFS_v01_M
    Title

    Labour Force Survey 2011
    Country
    Name Country code
    Bulgaria BGR
    Study type

    Labor Force Survey [hh/lfs]
    Abstract

    The objective of Bulgaria Labour Force Survey 2011 is to provide information on the economic activity of the population of 15 years of age and over and on the most important characteristics of employed and unemployed persons and persons not in the labour force.
    Kind of Data

    Sample survey data [ssd]
    Unit of Analysis
    • Households;
    • Individuals.

    Scope

    Notes

    The scope of the Labour Force Survey 2011 includes:

    • Demographic characteristics: age, sex, marital status, place/country of birth, nationality, educational attainment, relationship to household head, disability;
    • Main labour related characteristics: employment, unemployment, hours of work, wages, training received;
    • Other labour related characteristics: industry, occupation, status in employment, institutional sector (public/private), size of establishment, full time/part time status, permanency of the job, working time arrangements, duration of employment, existence of more than one job, characteristics of the second job(s), duration of unemployment, previous working experience, characteristics of the last job, search for another job, reasons for seeking another job, methods of looking for work, registration as unemployed, receipt of unemployment benefits, reasons for not being in the labour force, transition from school to work, transition from work to retirement.

    Coverage

    Geographic Coverage

    National
    Universe

    Whole population excluding the following groups: Persons living in institutions and persons living in indigenous areas.
    The usual residents present and the usual residents temporarily absent.
    The labour related questions of the survey relate to the population of 15 years old and over.

    Producers and sponsors

    Primary investigators
    Name
    National Statistical Institute

    Sampling

    Sampling Procedure

    Sampling frame: Population census
    The sampling frame is updated: not updated with a specific frequency
    Lowest level of geographic disaggregation for which reliable estimates of the unemployment rate can be produced and their frequency: 28 NUTS 3 districts (annual)
    The sample is stratified: Yes
    Variables used for stratification: geographic region, urbanisation
    Number of sampling stages: 2
    Ultimate sampling units: households
    Number of ultimate sampling units per sample area: 8
    Sample size: 19504 ultimate sampling units per quarter
    Sample fraction: 0.65% of the total population
    Sample rotation takes place: at the ultimate sampling unit level only
    The rotation system results in: the overlap between consecutive survey periods and the overlap between same periods one year apart
    Percentage of ultimate sampling units remaining in the sample for two consecutive survey rounds: 50%
    Maximum number of times an ultimate sampling unit is interviewed: 4
    Response Rate

    Percentage of all eligible ultimate sampling units that are interviewed: 82%
    Percentage of refusals in the total non-response: 4.5%
    Weighting

    The sample is self-weighting: No
    Weighting factors used to adjust for: bench-marking (to ensure consistency between survey estimates and those from other reliable source(s), e.g. census)

    Data collection

    Dates of Data Collection
    Start
    2011-09-14
    Data Collectors
    Name
    National Statistical Institute
    Data Collection Notes

    Main mode of data collection: face to face personal interview (paper and pencil)
    Number of ultimate sampling units (USU) interviewed per interviewer per day: 4
    Average duration of an interview per household member of working age: 15 minutes
    The field staff is mainly: part of a permanent survey organisation
    Respondents' participation in the survey is compulsory: No
    Ultimate sampling units that could not be identified are replaced: No
    Ultimate sampling units that could not be contacted are replaced: No
    Ultimate sampling units that refuse to participate are replaced: No

    Data Access

    Access authority
    Name URL
    National Statistical Institute http://www.nsi.bg/en
    Citation requirements

    Use of the dataset must be acknowledged using a citation which would include:

    • the Identification of the Primary Investigator
    • the title of the survey (including country, acronym and year of implementation)
    • the survey reference number
    • the source and date of download

    Disclaimer and copyrights

    Disclaimer

    The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.

    Contacts

    Contacts
    Name URL
    National Statistical Institute http://www.nsi.bg/en

    Metadata production

    DDI Document ID

    DDI_BGR_2011_LFS_v01_M_WB
    Producers
    Name Affiliation Role
    Development Data Group The World Bank Documentation of the DDI
    Date of Metadata Production

    2014-03-12

    Metadata version

    DDI Document version

    Version 1 (March 2014)
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