Labour Force Sample Survey 1974, 3rd quarter

SSB has conducted official quarterly labor force surveys (LFS) from Q1 1972. The survey aims to provide labor authorities and others familiar with the occupational structure of population and development over time. The surveys will provide the basis and statistical material for occupational forecasting and labor market research. In the LFS one respondent is interviewed for two consecutive quarters, then there's a break for two quarters and then the respondent is interviewed again for two consecutive quarters. The sample was approximately 10 to 11,000 respondents each quarter until the 1988. The Labour Force Survey 1976 is the fifth full year with LFS. Originally it was intended that the LFS should be an analytical supplement to the monthly employment statistics that were based on the insurance fund membership files. The insurance fund-based statistics, however, fell away when health insurance was included in the National Insurance Scheme from 1 January 1971, the LFS has gradually evolved to become the main source of knowledge about the state of the labor market.

In 1975 SSB changed the selection plan for surveys, see respectively Art.37: On the use of random samples at the office for interview surveys, Statistics Norway (Steinar Tamsfoss) and SES 33: Principles and Methods of Statistics Norway samples (Ib Thomsen) Meanwhile, the estimation method for inflating national figures changed so that there are reasonable numbers for regions from the 1975 reorganization in 1975 led to interviews changing in how they were performed in the pools before and after. This meant, among other things a break from the Panel system used in the LFS.

By Labour Force Survey 1976, it was adopted a slightly modified questionnaire and we came back on the original six-quarter rotation schedule. The new questionnaire meant that people in the group and family workers temporarily absent from work were identified in a better way. This resulted in approximately 30 to 35,000 more were counted as employed. Group seekers without work income was also expanded to include involuntarily laid off. The questions of subordinates and employment in the original form was deleted

From Q1 1987 the estimation method (inflating the national figures) slightly changed, moreover, there was a minor adjustment to the definition of employment. To achieve comparability backwards in time was therefore developed new versions of LFS files back to 1980 From 1980 there are therefore two versions of the files, respectively, with the "old" and "new" estimation method. Old means that data are comparable to the original published figures for the period 1972-1987, new means of data for the period 1980-1987 which utilizes this estimation factor (weight) is comparable with the figures published after 1987

This file is based on the NEW estimation method.

挪威统计局（Statistics Norway，以下简称SSB）自1972年第一季度起正式开展官方季度劳动力调查（Labor Force Survey，以下简称LFS）。本调查旨在为劳动力管理部门及其他关注人口职业结构及其动态演变的机构提供数据支撑，同时为职业预测与劳动力市场研究提供基础依据与统计资料。该调查采用轮换抽样设计：每名受访者需连续接受两季度访谈，随后进入两季度的休访期，再恢复连续两季度的访谈。1988年之前，每季度样本量约为10000至11000名受访者。1976年劳动力调查为该系列调查的第五个完整执行年度。最初，LFS被设定为依托保险基金参保档案的月度就业统计的分析补充。但1971年1月健康保险纳入国民保险计划后，原基于保险基金的统计方式随之废止，LFS也逐步演变为了解劳动力市场现状的核心信息来源。

1975年，SSB对调查抽样方案进行了调整，相关细节可参见《挪威统计局访谈调查办公室随机抽样使用规范》（Art.37: On the use of random samples at the office for interview surveys, Statistics Norway，作者Steinar Tamsfoss）及《挪威统计局抽样原则与方法》（SES 33: Principles and Methods of Statistics Norway samples，作者Ib Thomsen）。与此同时，全国总量数据的推算方法也进行了更新，使得1975年抽样重构后各区域的统计结果更为合理。此次调整还变更了访谈分组的实施流程，其中一项核心变化便是暂停了LFS原有的面板轮换机制。

1976年劳动力调查采用了小幅修订的问卷，并恢复了最初的六季度轮换周期。新问卷可更精准地识别临时离岗的团体雇员与家庭用工人员，这一修订使得纳入就业统计的人数增加约30000至35000人。同时，无劳动收入的求职者群体范围也得到拓展，新增了非自愿失业人员。原问卷中有关下属人员与就业状况的相关问题则予以删除。

1987年第一季度起，全国总量数据的推算方法（即样本加权系数调整）进行了小幅优化，同时就业定义也作出了微调。为实现历史数据的跨期可比性，研究人员针对1980年起的LFS数据集开发了新旧两个版本："旧版"推算方法的数据集可与1972-1987年原公开发布的统计数据保持可比；"新版"推算方法的数据集则针对1980-1987年时段，采用了本次更新的加权系数，可与1987年后发布的统计数据保持可比。

本数据集采用新版推算方法编制。