Labour Force Survey 2019, 2nd quarter

The target group for the note is partly researchers who want to work with microdata from the Labor Force Survey (LFS), and partly users of LFS data who are interested in a more detailed discussion of variables, definitions and data quality.

The purpose of the survey is to provide information on developments in employment and unemployment, and on the connection of different population groups to the labor market. In addition to providing the authorities and other interested information on the state and development of the labor market, LFS should serve as a basis for forecasts and studies and provide statistical material for the research. A large number of variables are included in the material. In addition to the demographic, there can be mentioned level of education, occupation, industry, agreed and actual working hours, various working time schemes, permanent / temporary employment, working conditions and employment.

LFS covers all persons aged 15-74 years registered as residents in Norway. Prior to 2006, the age group was 16-74 years, defined as age at the end of the year. From 2006, age is defined as full years at the reference dates for the survey. At the same time, the age limit for joining the committee was lowered to 15 years.

The survey does not include employees in Norway who commute from abroad, nor do employees in Norway who stay in the country for less than half a year.

On the basis of the national register, a number of family units consisting of a total of 24,000 persons (per quarter) are randomly extracted in the relevant age group. Each family member at this age is interviewed about their association with the labor market for a specified reference week, and participates in the survey a total of 8 times during 8 consecutive quarters.

Interview takes place by phone. Some information provided in previous interviews is used in subsequent interviews. Task giver is basically the same as the observation unit, but in 14-15 per cent of cases data is collected through indirect interviews, ie by responses from close family members.

The size of the dropout percentage as a percentage of the gross sample has varied greatly since LFS started in 1972. In the first 20 years it was generally around 10-12 per cent. In the years 1992-1997 it was particularly low, only 6-8 per cent, and then gradually increase to around 20 per cent from 2012. LFS is formally subject to liability, but compulsory fines are not practiced.

It is adjusted for total dropout by estimation. Individual questions that have not been answered are imputed to some key characteristics according to a set of rules (machine imputation). For more detailed documentation, see Statistics Norway's Notes 1993/34.

In selecting key concepts and definitions, Statistics Norway (SSB) has emphasized following the recommendations made by the International Labor Organization (ILO) for the preparation of labor market statistics. In addition, Norway participates in EU statistics cooperation, and is obliged to fulfill the requirements set by Eurostat (the EU Statistics Office) on the content of the LFS.

According to the international recommendations, people over a certain age should be classified according to their association with the labor market over a specified, short period, either a week or a day. For the Norwegian LFS, Statistics Norway has chosen the time period one week as a reference for information on those who are members of the committee.

本说明的目标受众分为两类，一类是希望使用劳动力调查（Labor Force Survey, LFS）微观数据的研究人员，另一类是希望深入了解变量、定义与数据质量细节的LFS数据使用者。

本次调查的核心目的是提供就业与失业的发展态势，以及不同人口群体与劳动力市场关联状况的相关信息。除了向主管部门及其他相关方提供劳动力市场现状与发展动态外，LFS还应作为预测与研究的基础，并为科研工作提供统计资料。该数据集包含大量变量，除人口统计特征外，还涵盖受教育程度、职业、行业、约定与实际工作时长、各类工时制度、永久/临时雇佣关系、工作条件与就业状况等。

LFS的调查覆盖挪威境内15-74岁的常住登记居民。2006年之前，调查的年龄范围为16-74岁，年龄界定以年末实际年龄为准；自2006年起，年龄以调查基准日期时的周岁为准，同时将调查的年龄下限下调至15岁。

本调查不包含从境外通勤至挪威工作的雇员，以及在挪威境内停留时长不足半年的雇员。

基于国家登记系统，会从符合年龄要求的人群中随机抽取家庭单元，每季度共计约24000名调查对象。该年龄范围内的所有家庭成员均需接受访谈，填报其在指定参考周内的劳动力市场参与情况，并在连续8个季度内参与共计8次调查。

访谈通过电话开展。此前访谈中收集的部分信息会被复用至后续访谈。访谈对象原则上与观测单元一致，但约14%-15%的样本会通过间接访谈收集数据，即由近亲属代为作答。

自1972年LFS启动以来，总样本的失访率波动幅度较大。最初20年，失访率大致维持在10%-12%；1992年至1997年间失访率尤其偏低，仅为6%-8%，随后逐步攀升，至2012年前后达到约20%。LFS在形式上需承担法律责任，但并未实际执行强制罚款措施。

通过估算对整体失访情况进行数据调整。针对未作答的个体问题，会依据一套规则进行机器插补，以若干关键特征填充缺失值。如需获取更详细的文档说明，请参阅挪威统计局（Statistics Norway, SSB）发布的《1993/34号说明》。

在选取核心概念与定义时，挪威统计局（Statistics Norway, SSB）强调需严格遵循国际劳工组织（International Labor Organization, ILO）制定的劳动力市场统计编制规范。此外，挪威参与欧盟统计合作体系，有义务满足欧盟统计办公室（Eurostat）对LFS内容提出的相关要求。

根据国际统计建议，超过特定年龄的人群应依据其在指定短时段（一周或一天）内的劳动力市场参与情况进行分类。针对挪威LFS，挪威统计局选择以一周作为调查对象劳动力市场参与情况的参考时段。