Labour Force Survey 2rd Quarter 2017, Supplementary Survey Concerning People with Disabilities

Labour Force Survey 2rd Quarter 2017, Supplementary Survey Concerning People with Disabilities. 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. -------------------------------------------- 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. ------------------------------------------------------------- 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 2017 concerning the situation in the labor market for people with disabilities. Corresponding surveys have been conducted annually since 2002.

2017年第二季度劳动力调查：残疾人专项补充调查。
自1972年第一季度起，挪威统计局（Statistics Norway，简称SSB）便开展官方季度劳动力调查（以下简称AKU）。本系列调查旨在为劳动力管理部门及其他相关方提供人口职业结构及其随时间演变的统计信息，为职业预测与劳动力研究提供基础数据与统计素材。
1992年起，AKU的样本具备县级代表性；1972年至1991年期间，样本以县组为单位实现代表性。2006年1月起，AKU启动重大修订以提升与其他国家同类调查的可比性，修订内容包括：对失业定义的小幅调整、问卷内容的优化与扩容、年龄定义变更（采用调查基准时点年龄替代年末年龄），同时将AKU的纳入年龄下限从16岁下调至15岁。上述调整导致前述统计维度的时间序列出现断点。

AKU最初的受访对象轮换方案为：每年连续两个季度接受访谈，随后暂停两个季度，再进行连续两个季度的访谈。1988年之前，每季度样本量约为10000至11000名受访者。AKU最初旨在作为基于社会保障参保索引文件的月度职业统计的分析补充，但1971年1月1日病假补助纳入国民保险体系后，基于社会保障的统计数据随之废止，AKU随后逐步发展为劳动力市场现状及其发展态势的核心统计数据源。
1975年，挪威统计局修订了调查研究的抽样框架，相关说明参见Steinar Tamsfoss所著SSB第37号文章《访谈调查办公室的随机样本使用规范》（英文原名：About the Use of Random Samples at the Office for Survey Research, Statistics Norway），以及Ib Thomsen所著SØS 33号文件《挪威统计局抽样调查的原则与方法》（英文原名：Principles and Methods for Statistics Norway's sample research）。同期，将样本数据校准至全国总水平的估算方法得到修订，自此1975年起可生成可靠的区域统计数据。1975年的修订调整了群体访谈方式，除其他影响外，还打破了AKU原有的面板轮换体系。
1976年的AKU调查启用了小幅修订的问卷，同时恢复了原有的6季度轮换方案。新版问卷可更精准地识别家庭帮工与临时无薪工作者，因此新增约30000至35000名就业人口；“无收入求职者”群体的范围也扩展至非自愿休假人员，原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，全国加权估算方法进行了小幅调整，就业定义也做了小幅调整。为确保数据与此前调查的可比性，研究人员编制了1980-1986年AKU数据集的修订版本，因此1980-1987年的AKU数据集存在两个版本：分别采用旧估算方法与新估算方法。“旧版本”数据可与1972-1987年发布的原始数据对标，“新版本”数据则可与1987年后发布的数据对标。

1988年第一季度至第二季度期间，AKU数据集的字段说明进行了修订，“劳动力市场状态”变量的编码规则得到调整。同时，数据采集方式也进行了优化：从每季度固定一周开展访谈改为连续每周开展访谈。此外，项目启动了样本量扩容计划，该调整影响了样本权重，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匹配，需将月度权重分别除以3或12以得到正确的合计值。
1996年，AKU进行了重大修订，涵盖问卷、数据集字段说明以及行业与职业编码标准。数据采集方式改为计算机辅助电话访谈（Computer Assisted Telephone Interviewing，简称CATI），新版行业分类标准NOS C 182正式启用（该标准基于欧盟NACE Rev.1标准，并于2002年和2007年更新）。同时，自1996年起采用基于ISCO 88标准的新版挪威职业分类标准（STYRK）。由于新版职业分类体系未开发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。
本数据集包含2017年第二季度劳动力调查的残疾人专项补充调查数据，该类专项调查自2002年起每年开展一次。