1. LAMAS Working Group 10-11 October 2016
Agenda Item 4.3 JVS seasonal adjustment

2. Analysis of SA data transmitted by the countries
Overview
Information on European aggregates whose SA data are compiled and published by Eurostat
Analysis of SA data transmitted by the countries
Information on the SA quality reports sent by the countries

3. Eurostat uses JDemetra+/ TRAMO- SEATS with the direct approach
European aggregates
Eurostat has started publishing SA data for EU aggregates, namely EU28 and EA19, in Eurobase
Those figures are disseminated for the following aggregated NACE sections: B-S, B-N, B-F and G-N
Eurostat uses JDemetra+/ TRAMO- SEATS with the direct approach

4. Job vacancy rates for the EU28 NACE sections B-S

5. Transmission of SA data
Mandatory to supply SA data for job vacancies and occupied posts at least for individual/aggregated NACE sections B-E, F, G-I, J, K, L, M-N, O- Q, R-S
All Member States as well as Norway and Switzerland now provide SA data for both job vacancies and occupied posts

6. Transmission of SA data
All the countries except Greece and the Netherlands provide long/whole SA time series for job vacancies and occupied posts
Eurostat do not intend to publish SA back data if they are not updated by the countries over more than one year

7. Transmission of SA quality reports
SA quality report should be included in the standard quality report
Eurostat developed a plug-in for JDemetra+ version 2.1 which facilitates the production of the SA quality report
The SA quality report for reference year received from all countries except Croatia, Estonia, France, Greece, Luxembourg and Sweden

8. Analysis of SA data
Eurostat tested in JDemetra+if residual seasonality was present in the SA job vacancy rates of the aggregated NACE sections B-S
The results show that there is no residual seasonality present
In the case of Germany, seasonality is not ruled out by three tests out of five and even found significant by one further test (periodogram)

9. Analysis of SA data – other tests
1st order autocorrelation of Q/Q-1 changes:
Negative (<-0.3) for:
DE, EL, MT, PT
Positive (> +0.3) for:
CZ, EE, IT, LV, PL, RO, UK
+ EA19 / EU28
- Not significant in other cases

10. Dissemination of SA data
SA data are published regularly with the NSA data in Eurobase
More visibility to SA data is considered by publishing European aggregates in the Statistics Explained article on JVS, alongside NSA data
In the view of the statistical tests, the situation is not mature to make SA data the news headline figures instead of NSA data

11. Conclusions 1/2
For the countries that have not transmitted their SA quality reports with the standard quality reports for 2016, namely, Croatia, Estonia, France, Greece, Luxembourg and Sweden, to do so before the end of this year; Furthermore, Belgium, the Czech Republic, the Netherlands and Switzerland are asked to update the SA quality report with information for the time series ending in Q4;

12. Conclusions 2/2
To note that Eurostat will not publish SA back data if they are not updated by the countries over more than one year. In particular, Greece and the Netherlands are asked to ensure that long/whole SA time series are transmitted to Eurostat. The Netherlands are also asked to deliver SA job vacancies in NACE sections B-E;
To take note of Eurostat's dissemination of SA data for the European aggregates and its plans to include them in the SE article on JVS

13. Thank you for your attention!