Labour Force Survey 2004 - Bulgaria

Abstract
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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.

An ad hoc module "Organisation of work and working time arrangements" was added in the Labour Force Survey in the second quarter of 2004. The module examined types of working time, shift work and atypical working time (for example, in Saturdays or Sundays).

Geographic coverage
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National

Analysis unit
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- households,
- individuals.

Universe
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All usual residents aged 15 years and above living in non-institutional households, including those temporarily absent.

Kind of data
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Sample survey data [ssd]

Sampling procedure
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Ultimate sampling unit - household.

Sample frame - Population Census.

Number of ultimate sampling units per sample area - 12 households per enumeration district.

Updating of the sample - annually.

Mode of data collection
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Face-to-face [f2f]

Research instrument
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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.

Cleaning operations
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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.

摘要
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劳动力调查是保加利亚进行的最大规模的定期家庭样本调查。该调查根据国际上通行的概念和定义，提供了关于人口经济活动——就业和失业——的信息。
国家社会经济发展的诸多重要指标，如活动率、就业率和失业率，均基于劳动力调查数据计算得出。
调查覆盖全国范围。仅包括私人家庭。居住在学生宿舍或工人宿舍的人员被视为私人家庭。样本中的所有家庭在季度内的12周内均匀分布的参考期内进行问卷调查。
数据通过面对面的访谈，由15岁及以上的家庭成员收集。
特设模块“工作组织和工作时间安排”于2004年第二季度加入劳动力调查。该模块考察了工作时间类型、轮班工作和非常规工作时间（例如，周六或周日）。
地理覆盖范围
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全国
分析单元
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- 家庭,
- 个人。
总体
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所有年龄在15岁及以上，居住在非机构性家庭中的常住居民，包括临时缺席者。
数据类型
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样本调查数据 [ssd]
抽样程序
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最终抽样单位 - 家庭。
抽样框架 - 人口普查。
每个样本区域的最终抽样单位数量 - 每个统计区域12个家庭。
样本更新 - 每年。
数据收集方式
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面对面 [f2f]
研究工具
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劳动力调查中使用了两种类型的问卷：
- 家庭问卷。
家庭问卷在首次访问时填写，用于所有四次访谈。
- 个人问卷。
此类问卷由15岁及以上，永久居住在家庭中的人员填写。信息可以为四个家庭成员填写——每人一栏。如果家庭中有超过四个15岁及以上的成员，则需要填写新的问卷。个人问卷的身份部分（区域、定居点、区域内集群编号、集群内家庭编号、观察期最后一天日期）必须与家庭问卷的身份部分完全对应。
数据清理操作
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来自地方统计办公室的访谈员访问选定的家庭，并访谈这些家庭中的居民。填写的问卷被编码，数据在地方统计办公室的电脑上录入。原始数据被发送到国家统计局，在那里进行全国级别的加权。加权数据根据不同的特征进行分解：总计、按性别、年龄、城乡、教育水平、职业状态、职业、按统计区域和地区。数据被编制成表格，用于分发和发布。