Labour Force Survey 2005
Bulgaria, 2005
Identification
BGR_2005_LFS_v01_M
Labour Force Survey 2005
| Name | Country code |
|---|---|
| Bulgaria | BGR |
Labor Force Survey [hh/lfs]
The main purpose of the Labour Force Survey is to provide information on the main characteristics of employment and unemployment in the Republic of Bulgaria. In June and October 1994 two survey rounds were carried out. From 1995 to 2000, the survey has been conducted three times a year, the sample size decreased from 30,000 to 24,000 households. In 2000-2002 the survey delivered quarterly results based on a single reference week in the last month of the quarter. In 2003 the survey was redesigned as a continuous Labour Force Survey, providing quarterly results.
The following classifications are used in the survey: International Standard Classification of Education - Revision 1997 (ISCED - 97); Classification of Economic Activities - 2008 - in force since 2008, which is a Bulgarian version of NACE, Rev. 2; National Classification of Occupations - 2005 (1st digit - occupational class), comparable to the International Standard Classification of Occupations – ISCO ’88, in force until 2010; National Classification of Occupations - 2011 (1st digit - occupational class), comparable to the International Standard Classification of Occupations – ISCO ’08, in force since 1 January 2011; International classification of professional status - ICSE-93; Classification of Territorial Units for Statistical Purposes in Bulgaria, harmonized with the European Classification of Territorial Units for Statistics - NUTS.
The Labour Force Survey is the largest regular household sample survey carried out in Bulgaria. It provides information on economic activity of the population - employment and unemployment, according to the internationally adopted concepts and definitions. Some of the most important indicators of socio-economic development of the country, as activity rate, employment rate and unemployment rate are calculated on the base of the Labour Force Survey.
The survey covers the whole country. Only private households are included. Persons, living in student or workers' hostels are treated as private households. All households, covered in the sample, are surveyed within three months with the reference period evenly spread throughout 12 weeks of the quarter. Data is collected by personal interviews with household members 15 years old and over.
In the second quarter of 2005, the ad hoc module "Reconciliation between work and family life" was included into the Labour Force Survey.
Sample survey data [ssd]
- households,
- individuals.
Version
v01
2005
Scope
Employment, unemployment, underemployment, hours of work, duration of unemployment, discouraged workers, industry, occupation, status in employment, educational level.
Coverage
National
All usual residents aged 15 years and above living in non-institutional households, including those temporarily absent.
Producers and sponsors
| Name | Affiliation |
|---|---|
| National Statistical Institute of Bulgaria | NSI |
| Name |
|---|
| National Statistical Institute of Bulgaria |
Sampling
The Labour Force Survey is based on two-stage stratified cluster sample. Clusters at the first stage are the enumeration districts and at the second stage - households. In the first stage 2,250 enumeration districts are selected with probability proportional to the population in the districts. In the second stage eight households are sampled with systematic random sample from each PSU. The sample consists of three independent sub-samples of enumeration districts for each month of a quarter. The households from each of these sub-samples are evenly spread through the 4 weeks in a month. Each month, 6,000 households in 750 enumeration districts are observed, e.g. 1,500 households per week.
The sample is stratified by districts (28 administrative districts at NUTS-3 level), crossing with urban/rural area. The base for the LFS sample is provided by 2001 Population Census. The enumeration districts and households in the sample have been selected from the list
roll of enumeration districts and households prepared during the March 2001 Population Census. The sample unit is the household. In total 18,000 households are sampled each quarter, corresponding to an overall sampling rate of 0.6%.
A 2-(2)-2-rotation pattern is used. According to the rotation scheme (applied since March 1996) half of the households (4 in each enumeration district) stay in the sample for two consecutive quarters. Respondents are interviewed in two consecutive quarters, then temporarily are removed for the next two quarters and enter again for the following two quarters afterwards being definitely removed from the survey.
The average response rate in 2005 was 83.3%. Refusals were 23% of the total nonresponse.
The current population estimates as of 31 December of the preceding year are used for weighting the results. These data do not exclude institutional population, although it is not covered by the survey. Data obtained by the survey are post-stratified by 28 districts, urban or rural areas, sex and 4 age groups. All persons in each of these 448 strata have the same weight. The weight is calculated by dividing the population in each stratum by the number of interviewed persons in the same stratum.
Survey instrument
Two types of questionnaires are used in the Labour Force Survey:
-
Household Questionnaire.
Household questionnaire is filled in for each household at the first visit and is used for all four interviews. -
Individual Questionnaire.
This type of questionnaire is filled in for persons 15 years old and above, permanently living in the household. Information could be filled for four household members - one in each column. A new questionnaire has to be filled in if there are more than four household members aged 15 and more. Identity part of the individual questionnaire (district, settlement, number of the cluster within the district, number of the household within the cluster, date of the last day of the observed period) has to correspond fully to the identity part of the household questionnaire.
The ad hoc module "Reconciliation between work and family life" was included into the LFS in the second quarter of 2005. The questions were designed to:
- reveal whether respondents' participation in the labour force is in conformity with their wishes or it is impeded from lack of appropriate services connected to care for children or ill, disabled and elderly persons;
- define the degree of flexibility offered at work in terms of reconciliation with family life;
- estimate frequency of parental leave taken.
Data collection
| Start | End | Cycle |
|---|---|---|
| 2005 | 2005 | Quarterly |
| Name |
|---|
| National Statistical Institute of Bulgaria |
The interviews are carried out by about 445 interviewers (including those working part-time on LFS) who are mainly the staff of the regional offices of NSI. In 2005, 42% of the interviews of persons aged 15-74 years were by proxy.
Data processing
Interviewers from the regional statistical offices visit the selected households and interview persons living in these households. Filled-in questionnaires are coded and data entry is done on PC at the regional statistical offices. Primary data is sent to the National Statistical Institute, where it is weighted at national level. Weighted data is broken down by different characteristics: total, by sex, age, urban/rural areas, level of education, professional status, occupation, by statistical regions and districts. Data is tabulated for dissemination and publishing.
Data Access
The use of the datasets must be acknowledged using a citation which would include:
- the identification of the Primary Investigator (including country name)
- the full title of the survey and its acronym (when available), and the year(s) of implementation
- the survey reference number
- the source and date of download (for datasets disseminated online)
Example:
National Statistical Institute of Bulgaria. Bulgaria Labour Force Survey (LFS) 2005, Ref. BGR_2005_LFS_v01_M. Dataset downloaded from [URL] on [date].
Disclaimer and copyrights
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
| Name | URL | |
|---|---|---|
| National Statistical Institute of Bulgaria | info@nsi.bg | http://www.nsi.bg/ |
Metadata production
DDI_BGR_2005_LFS_v01_M
| Name | Affiliation | Role |
|---|---|---|
| Development Data Group | World Bank | Study documentation |
2011-05-20
Metadata version
v02 (December 2012)
Following changes were made in v02, compared to v01 produced in May 2011:
- Edited "Abstract", "Series Information", "Scope", "Units of Analysis", "Sampling Procedure";
- Added "Weighting" and "Response Rate";
- Included additional external resources.