National Statistical Institute
|Contact organisation unit|
Labour Market Statistics Department
|Contact person function|
Head of department
|Contact mail address|
2, P. Vovov str.
1038 Sofia, Bulgaria
|Contact email address|
|Contact phone number|
+359 2 9857 568
|Contact fax number|
|Metadata last certified||20 July 2020|
|Metadata last posted||20 July 2020|
|Metadata last update||20 July 2020|
The Labour force survey is a sample statistical survey carried out through households. The main purpose of the survey is to provide data on labour status of population aged 15 years and over and main characteristics of employed, unemployed and persons out of labour force in the Republic of Bulgaria.
In 2019 an ad hoc module on work organisation and working time arrangements was incorporated in the regular Labour force survey. The 2019 ad hoc module provides detailed and comparable data on:
- flexibility of working time;
- autonomy of work;
- place of work and commuting time.
The classifications applied in the Labour force survey are harmonised with the international classifications in terms of economic activities, occupations, educational attainment. The main classification used are the following:
All persons aged 15 years and over living in the selected non-institutional households are covered by the Labour force survey. The target population for the ad hoc module "Work organisation and working time arrangements" consists of employed persons.
|Statistical concepts and definitions|
The main definitions applied in the survey are in accordance with the recommendation of International Labour Organization (ILO) and EU legislation.
Employed are persons aged 15 and over who during the reference period:
Professional status. According to professional status the employed persons are classified in the following categories:
In the tables consisting data from the ad hoc module on work organisation and working time arrangements, the employers, self-employed without employees and unpaid family workers are presented as one category – self-employed.
Persons living in private households.
Total population usually residing in Bulgaria, except persons living in collective households.
The ad hoc module "Work organisation and working time arrangements" refers to employed persons.
Whole territory of Republic of Bulgaria.
|Unit of measure|
Number of persons - in thousands
Generally, for every household in the LFS sample the reference period is one calendar week (from Monday to Sunday). As the sample for the ad hoc module is spread evenly trough all weeks of the year, the estimates are considered as annual averages.
|Legal acts and other agreements|
Commission delegated regulation (EU) 2016/1851 of 14 June 2016 adopting the programme of ad hoc modules, covering the years 2019, 2020 and 2021, for the labour force sample survey provided for by Council Regulation (EC) No 577/98 (OL 2016 L 284, p.1);
Commission implementing regulation (EU) 2017/2384 of 19 December 2017 specifying the technical characteristics of the 2019 ad hoc module on work organisation and working time arrangements as regards the labour force sample survey pursuant to Council Regulation (EC) No 577/98 (OL 2017 L 340, p.35).
|Confidentiality - policy|
The confidentiality is guaranteed by:
|Confidentiality - data treatment|
Individual anonymised data provided for the purposes of scientific research do not consist any administrative data as personal information and address and do not allow direct identification. Additional aggregation of data is performed for some of the variables.
In accordance with Article 25 of the Law on Statistics individual data are not published. Dissemination of individual data is possible only in accordance with Article 26 of the Law on Statistics.
The main results from the LFS ad hoc module on work organisation and working time arrangements were published on the NSI website on 9 July 2020.
|Release calendar access|
Data are disseminated on the NSI website, section "Labour Market" in accordance with the Law on Statistics and European Statistics Code of Practice respecting professional independence and in an objective, professional and transparent manner in which all users are treated equitably.
Accessibility of all users to statistical data and equality of their rights are stipulated in the Regulation for dissemination of statistical products and services by the National Statistical Institute.
|Frequency of dissemination|
|Accessibility and clarity|
The main results from the ad hoc module "Organisation of work and working time arrangements" are available for all users at the NSI website www.nsi.bg, section "Labour Market", Labour Force Survey
Individual anonymous micro-data could be provided for scientific research purposes by individual request according to the Regulation of submission of anonymous individual data for scientific and research purposes.
An information service could be provided by request, according to the Rules for Dissemination of Statistical Information Products and Services.
|Documentation on methodology|
Ensuring the quality of Labour force survey and its modules is according to the policy and Quality Management Programme of NSI.
The main users of LFS statistical data are:
· International organisations:
- European Commission - DG Employment and other Directorates;
- Eurostat - Labour market and lifelong learning unit and other units;
- European Central Bank;
- International Labour Organization;
· National users:
- Ministries and State agencies;
- Bulgarian National Bank;
- Trade Unions;
- Employers' organisations;
- Non-governmental organisations;
- Research institutions;
- Companies, agencies - for own marketing researches and consultancy activities.
All variables of ad hoc module "Work organisation and working time arrangements" according Commission implementing regulation (EU) 2017/2384 of 19 December 2017 were covered.
|Accuracy and reliability|
The sample used for the Labour force survey is a two-stage stratified cluster sample which includes quarterly about 19.6 thousand households (representing about 0.65% sampling rate).
Due to the sampling approach used in the Labour force survey, the estimation of the parameters obtained from the survey could vary from those in the population due to sampling errors, errors due to non-response, errors in registration or processing etc.
Coefficients of variation (relative standard errors), and confidence intervals (i.e. the range of values that 95% of times would capture the true value in the population) are calculated for assessment of stochastic reliability of the estimates for main indicators.
|Timeliness and punctuality|
The results from the ad hoc module "Work organisation and working time arrangements" were presented on 9 July 2020.
|Coherence and comparability|
|Comparability - geographical|
Comparability across EU Member States is considered high due to use of harmonised concepts, variables, definitions and classifications.
|Comparability - over time|
Labour force survey ad hoc module on work organisation and working time arrangements was carried out in 2004 but due to differences in the methodology used data are not comparable with that from 2019 ad hoc module.
|Coherence - cross domain|
|Coherence - internal|
The number of employed persons according to the ad hoc module slightly differs from the corresponding average annual data from the Labour force survey due to use of sub-sample and presence of small number of respondents, not interviewed on the ad hoc module.
|Cost and burden|
The average duration of the interview on the ad hoc module "Work organisation and working time arrangements" was about 10 minutes per person.
|Data revision - policy|
|Data revision - practice|
|Frequency of data collection|
Data are collected through paper questionnaire and personal interview with employed persons from the selected households.
Plausibility checks are performed during the data entry. Additional consistency checks are carried out before publishing of data.
The filled in questionnaires are coded (for economic activity, occupation, place of work, field of education etc.) and entered into computer in NSI regional offices. Data files are sent to NSI head office, where additional control and weighting is done. Data are aggregated by different variables (characteristics), tabulated and disseminated.
Work organisation and working time arrangements - Ad-hoc module to the Labour Force Survey in 2019
Download in SDMX 2.1 file format: Labour Force Survey ad-hoc module "Work organisation and working time arrangements" - 2019
Metadata Structure Definition in SDMX 2.1: ESMS_MSD+BNSI+2.0+SDMX.2.1.xml
Download in SDMX 2.0 file format: Labour Force Survey ad-hoc module "Work organisation and working time arrangements" - 2019
Metadata Structure Definition in SDMX 2.0: ESMS_MSD+BNSI+2.0+SDMX.2.0.xml