Labour Force Survey 2nd Quarter 2011, Persons with Disabilities

Labour Force Survey 2nd Quarter 2011, Persons with Disabilities

In the second quarter of each year, the Labor Force Survey (LFS) has some additional questions about disability. The statistics provide information on the situation in the labor market for people with disabilities, and the development over time, compared with the entire population. This data set contains a supplementary survey to the Labor Force Survey (LFS) in the second quarter of 2011. Corresponding surveys have been conducted annually since 2002.

As of the 1st quarter of 1972, SSB has conducted official quarterly labour force surveys (AKU). These surveys aim to give the labour force authorities (and other people interested) knowledge of the occupational structure of the population and how it develops over time. The surveys are meant to give a foundation and statistical material for occupational prognoses and labour research. The samples in AKU are from 1992 representative at county level. In the period 1972-1991 they were representative on county pair level.

As from January 2006 some major changes were introduced to AKU in order to enhance its comparability to similar surveys in other countries. The changes consist of minor definitional adjustments of unemployment, some adjustments and enlargement of the questionnaire and a change in age definition (age at reference point instead of at the end of the year). Simultaneously the lower age limit to be included in AKU was lowered from 16 to 15 years. This led to some breaks in the time series in the aforementioned areas.

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Originally, AKU respondents were interviewed in two consecutive quarters of a year, followed by a pause of two quarters, and then another two quarters of interviews. The sample was approximately 10-11.000 respondents in each quarter up until 1988. Originally, AKU was intended to be an analytical supplement to the monthly occupational statistics that was based on the social security membership index file. However, the social security-based statistics disappeared when the sickness benefit was included in the National Insurance as of 1st of January 1971, and AKU has after gradually developed into the most significant source of knowledge of the state of the labour market and its development.

In 1975, Statistics Norway changed the sampling frame of survey research, see article 37: "Om bruk av stikkprøver ved kontoret for intervjuundersøkelser", SSB (About the Use of Random Samples at the Office for Survey Research, Statistics Norway) by Steinar Tamsfoss, and SØS 33: "Prinsipper og metoder for Statistisk sentralbyrås utvalgsundersøkelse (Principles and Methods for Statistics Norway's sample research) by Ib Thomsen. Simultaneously, the method for estimation of inflation to national numbers was changed, so that reasonable numbers for regions do exist from 1975 and onwards. The change in 1975 led to a different way of interviewing in groups. This caused amongst other things a break with the AKU panel systematics.

In the AKU survey of 1976, a slightly changed questionnaire was introduced. Also, there was a return to the original 6-quarter rotation scheme. The new questionnaire implied a better identification of family workers and persons that are temporarily without paid work. Thus, 30-35 000 more people were defined as employed. The group of "job-seekers without income" were also extended to include persons that were on an involuntary leave of absence. The questions concerning underemployment and "over employment" in the original questionnaire were abandoned.

From the 1st quarter of 1987, the estimation method (inflation to national numbers) was slightly changed. There was also a minor adjustment in the definition of employment. In order to ensure that the numbers were to be comparable to earlier surveys, new versions of the 1980-1986 AKU-files were drawn up. Consequently two versions of the 1980-1987 files - respectively with the old and new methods of estimation - exist. The "old" means that the data are comparable to the original numbers published in the period of 1972 - 1987, whilst the "new" implies that the data are comparable to numbers published after 1987.
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Between the 1st and 2nd quarter of 1988, the AKU file description was changed. The variable "Labour-market status" was given a different coding. In addition, adjustments in the data collections were made - from interviewing a specific week every quarter to carry out continuous weekly interviews. In addition, an escalation scheme to increase the sample size was started. This affected the weights, and from the 2nd quarter of 1988, these were recalculated monthly. To balance out the quarterly or yearly files to total national numbers, the monthly weights therefore had to be divided in three or twelve to give the correct total number.

In 1996, AKU was significantly revised: The questionnaire, the file description and the standard for coding of industry and occupation. The data collection also changed to CATI - Computer Assisted Telephone Interviewing. A new classification of industry was put into use (NOS C 182, based on the EU standard NACE, Rev.1). This standard was updated in 2002 and 2007. Also, the new Norwegian standard classification of occupations (STYRK) based on ISCO 88 was used from 1996 and onwards. The variable indicating socio-economic status was omitted, as a similar variable was not developed in the new occupational classification.

This data set contains a supplementary survey to the Labor Force Survey in the second quarter of 2020 concerning the situation in the labor market for people with disabilities. Corresponding surveys have been conducted annually since 2002.

2011年第二季度劳动力调查：残疾人群体

每年第二季度，劳动力调查（Labor Force Survey, LFS）会增设关于残疾状况的专项问题。本统计数据旨在反映残疾人群体的劳动力市场境况及其随时间的演变趋势，并与全体人口的相关情况进行对比。本数据集为2011年第二季度劳动力调查（LFS）的补充调查内容，自2002年起，此类针对残疾人群的补充调查已按年持续开展。

自1972年第一季度起，挪威统计局（Statistics Norway, SSB）便开展官方季度劳动力调查（AKU）。该调查旨在为劳动力管理部门及其他相关从业者提供人口职业结构及其随时间演变的相关信息，为职业预测与劳动研究提供基础数据与统计素材。自1992年起，AKU的样本覆盖至县级层面；1972年至1991年期间，样本仅在县际配对层面具备代表性。

2006年1月起，AKU迎来多项重大调整，以提升其与其他国家同类调查的可比性。调整内容包括：对失业定义进行小幅修正，修订并扩充调查问卷，以及变更年龄统计口径（采用调查基准时点年龄而非年末年龄）。同时，AKU的最低受访年龄从16岁下调至15岁。上述调整导致上述统计领域的时间序列出现断点。

最初，AKU的受访对象需在一年内连续两个季度接受访谈，随后暂停两个季度，再进行后续两个季度的访谈。1988年以前，每季度的受访样本量约为10000至11000人。AKU最初旨在作为基于社会保障会员索引档案的月度职业统计的分析补充。但1971年1月1日起，病假津贴被纳入国民保险体系，基于社会保障的职业统计随之取消，AKU也逐步演变为了解劳动力市场现状及其发展趋势的核心统计来源。

1975年，挪威统计局修订了调查研究的抽样框架，相关细节可参考Steinar Tamsfoss撰写的《关于调查研究办公室的随机抽样应用》（原文挪威语标题：Om bruk av stikkprøver ved kontoret for intervjuundersøkelser, SSB），以及Ib Thomsen撰写的SØS 33号文件《挪威统计局抽样调查的原则与方法》（原文挪威语标题：Prinsipper og metoder for Statistisk sentralbyrås utvalgsundersøkelse）。与此同时，全国总量的通胀估算方法也进行了调整，自此1975年起，各区域的合理统计数据得以生成。1975年的调整改变了群体访谈的方式，其中一项直接后果便是打破了AKU的面板轮换体系。

1976年的AKU调查启用了修订后的调查问卷，同时恢复了最初的6季度轮换机制。新版问卷能够更精准地识别家庭帮工与临时无薪工作者，因此新增了30000至35000名就业人口。“无收入求职者”群体的范围也得到扩充，纳入了非自愿休假的人员。原版问卷中关于就业不足与“过度就业”的问题则被移除。

1987年第一季度起，全国总量的通胀估算方法进行了小幅调整，就业定义也进行了细微修正。为确保数据与此前调查的可比性，研究人员重新编制了1980年至1986年的AKU数据集版本。因此1980年至1987年的AKU数据集存在两个版本：分别采用旧版与新版估算方法。“旧版”意味着数据可与1972年至1987年发布的原始统计数据进行对比，而“新版”则表示数据可与1987年后发布的统计数据保持一致。

1988年第一季度至第二季度期间，AKU的数据集描述规则进行了调整：“劳动力市场状态”变量的编码方式发生变更。同时，数据收集流程也进行了修订，将原有的每季度固定一周访谈改为连续每周访谈。此外，研究机构启动了样本量扩容计划，这对权重计算产生了影响：自1988年第二季度起，权重改为按月重新计算。为使季度或年度数据集与全国总量保持平衡，月度权重需分别除以3或12，以得到准确的总数值。

1996年，AKU迎来重大修订，涉及调查问卷、数据集描述规则以及行业与职业编码标准。数据收集方式也变更为计算机辅助电话访谈（Computer Assisted Telephone Interviewing, CATI）。新版行业分类标准（NOS C 182，基于欧盟NACE Rev.1标准）于同年启用，并分别于2002年和2007年进行了更新。同时，1996年起开始采用基于ISCO 88标准的新版挪威职业分类体系（STYRK）。由于新版职业分类体系未设置对应的社会经济地位变量，原有的社会经济地位变量被移除。

本数据集为2020年第二季度劳动力调查的补充调查内容，聚焦残疾人群体的劳动力市场境况，自2002年起，此类专项补充调查已按年持续开展。