Quarterly Labour Force Survey 2020, Quarter 4 - South Africa

Abstract
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The Quarterly Labour Force Survey (QLFS) is a household-based sample survey conducted by Statistics South Africa (Stats SA). It collects data on the labour market activities of individuals aged 15 years or older who live in South Africa.

Geographic coverage
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National coverage

Analysis unit
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Individuals

Universe
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The QLFS sample covers the non-institutional population of South Africa with one exception. The only institutional subpopulation included in the QLFS sample are individuals in worker's hostels. Persons living in private dwelling units within institutions are also enumerated. For example, within a school compound, one would enumerate the schoolmaster's house and teachers' accommodation because these are private dwellings. Students living in a dormitory on the school compound would, however, be excluded.

Kind of data
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Sample survey data [ssd]

Sampling procedure
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The sampling procedure for this quarter of the QLFS had to be changed from the norm due to covid-19. In this 2020 Q4 the sample used was the same sample as from Q3, Q2 and Q1 from 2020. Because the interviews were done telephonically, any sampling units that did not have telephones dropped out of the sample. This was adjusted for in the weighting procedure.

Mode of data collection
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Computer Assisted Telephone Interview [cati]

Research instrument
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The survey questionnaire consists of the following sections:
- Biographical information (marital status, education, etc.)
- Economic activities in the last week for persons aged 15 years and older
- Unemployment and economic inactivity for persons aged 15 years and above
- Main work activity in the last week for persons aged 15 years and above
- Earnings in the main job for employees, employers and own-account workers aged 15 years and above

From 2010 the income data collected by South Africa's Quarterly Labour Force Survey is no longer provided in the QLFS dataset (except for a brief return in QLFS 2010 Q3 which may be an error). Possibly because the data is unreliable at the level of the quarter, Statistics South Africa now provides the income data from the QLFS in an annualised dataset called Labour Market Dynamics in South Africa (LMDSA). The datasets for LMDSA are available from DataFirst's website.

Cleaning operations
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In general, imputation was used for item non-response (i.e., blanks within the questionnaire) and edit failures (i.e., invalid or inconsistent responses).

摘要
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南非统计局（Stats SA）开展的季度劳动力调查（QLFS）是一项基于家庭的抽样调查。该调查收集了居住在南非且年龄在15岁及以上的个人在劳动力市场的活动数据。

地理覆盖范围
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全国覆盖

分析单元
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个人

总体
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QLFS样本涵盖了南非的非机构人口，但存在一个例外。唯一包含在QLFS样本中的机构子群体是工人宿舍中的个人。居住在机构内部私人住宅单位的人员也被纳入统计。例如，在学校园区内，会对校长住宅和教师宿舍进行统计，因为这些是私人住宅。然而，居住在学校园区宿舍的学生则被排除在外。

数据类型
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抽样调查数据 [ssd]

抽样程序
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由于新冠疫情的影响，本季度QLFS的抽样程序与常规程序有所不同。在2020年第四季度，所使用的样本与2020年的第三季度、第二季度和第一季度的样本相同。由于访谈是通过电话进行的，因此没有电话的抽样单位被排除在样本之外。这在加权程序中得到了调整。

数据收集方式
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计算机辅助电话访谈 [cati]

研究工具
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调查问卷包括以下部分：
- 个人信息（婚姻状况、教育程度等）
- 15岁及以上人员在过去一周的经济活动
- 15岁及以上人员的失业和经济不活跃情况
- 15岁及以上人员在过去一周的主要工作活动
- 15岁及以上的雇员、雇主和自营职业者的主要工作收入

自2010年起，南非季度劳动力调查收集的收入数据不再包含在QLFS数据集中（除了在2010年第三季度QLFS中短暂恢复，可能是一个错误）。可能是因为季度层面的数据不可靠，南非统计局现在通过名为“南非劳动力市场动态”（LMDSA）的年度化数据集提供来自QLFS的收入数据。LMDSA数据集可在DataFirst网站获取。

清洗操作
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通常，对于问卷中的非响应项（即空白）和编辑失败（即无效或不一致的回答），使用了插补法。