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Structural break in the Norwegian LFS due to the 2021 redesign

Author

Listed:
  • Håvard Hungnes
  • Terje Skjerpen
  • Jørn Ivar Hamre
  • Xiaoming Chen Jansen
  • Dinh Quang Pham
  • Ole Sandvik

    (Statistics Norway)

Abstract

The labour force surveys (LFSs) on all Eurostat countries underwent a substantial redesign in January 2021. To ensure coherent labour market time series for the main indicators in the Norwegian LFS, we model the impact of the redesign. We use a state-space model that takes explicit account of the rotating pattern of the LFS. We also include auxiliary variables related to employment and unemployment that are highly correlated with the LFS variables we consider. The results of a parallel run are also included in the model. This paper makes two contributions to the literature on the effects of LFS redesign. First, we suggest a symmetric specification of the process of the wave-specific effects. Second, we account for substantial fluctuations in the labour force estimates during the Covid-19 pandemic by applying time-varying hyperparameters. Likelihood-ratio tests and examination of the auxiliary residuals show the latter to be warranted.

Suggested Citation

  • Håvard Hungnes & Terje Skjerpen & Jørn Ivar Hamre & Xiaoming Chen Jansen & Dinh Quang Pham & Ole Sandvik, 2022. "Structural break in the Norwegian LFS due to the 2021 redesign," Discussion Papers 987, Statistics Norway, Research Department.
    • Handle: RePEc:ssb:dispap:987
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    File URL: https://www.ssb.no/arbeid-og-lonn/sysselsetting/artikler/strukturelt-brudd-i-aku-som-folge-av-omlegging-av-undersokelsen-i-2021/_/attachment/inline/eb442493-ed0e-4909-a2c1-460139c28432:4e085f00c8aeaad4639bddab344ab2b936fbf599/DP987_web.pdf
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    More about this item

    Keywords

    State-space models; Auxiliary information; Labour market domains; Level shifts; Covid19; Norway;
    All these keywords.

    JEL classification:

    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • C83 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Survey Methods; Sampling Methods
    • J21 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Labor Force and Employment, Size, and Structure

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