1) What was changed in the last revision (September 2014)?
Due to the revision of the National Accounts (NA) and the introduction of the Structural Business Statistics (STATENT), the existing way of measuring labour productivity was revised.
With the revision of the Swiss National Accounts (NA) in September 2014 (conversion to ESA 2010), numerous conceptual changes were introduced which led to a definite increase in gross domestic product (GDP) and to a change in the gross value added of various economic activities.
For further information please see (in German):
Until 2014 the full-time equivalents of a specially developed synthesis statistic was used to measure the labour productivity of the business sector by economic sectors and activities. This was based on the Swiss Labour Force Survey, the Job Statistics, and other sources. With the introduction of STATENT in November 2013, a new statistic was added which in addition to other information, provided details of jobs in full-time equivalents (FTE). This statistic was chosen over the previous synthesis statistic
For further information please see (in German and French):
The FTE from STATENT 2011 were adjusted for non-market driven producers and a retropolation was carried out based on the evolution of the previous series (excl. primary sector).
The Work Volume Statistics is used to measure labour productivity in the total economy. As a result of the Swiss Labour Force Survey being conducted every quarter, this statistic (main source for the WV) was subject to a specific weighting in April 2014.
All results on labour productivity were consequently recalculated. For the total economy, these new time series go back as far as the survey year 1991 and for the economic activities back to 1995.
2) Following the last revision is it possible to interpret differences between the previous and the new time series on labour productivity?
The differences cannot be interpreted, as they are due to many factors. For labour productivity by economic sector or activity, the differences are sometimes even greater than in the total economy, as the Swiss National Accounts (NA) revision affected individual activities differently.
The changeover to STATENT for labour input also made it more difficult to make comparisons with previous series. In this new population the number of jobs is considerably higher in some branches (e.g. in the liberal professions or provision of other services), and in others lower (e.g. in the primary sector).
3) Are the productivity time series subject to a break due to the revision?
There is no break in the time series. A retrospective calculation is made in order to make data available over long time series. The variables needed to calculate labour productivity (economic output and labour input) date from 2011 and underwent a subsequent retrospective extrapolation based on the information available. In the denominator, jobs in full-time equivalents (FTE) with the exception of the primary sector are recalculated using evolutions from previous time series. For the primary sector, the growth rates of the primary sector satellite accounts are used.
4) When will the next revision take place?
The next revision will take place in cooperation with the National Accounts (NA), the results of which are regularly updated (approximately every five years). These revisions provide an opportunity to make conceptual and methodological adjustments and to introduce new statistical data.