ESENER-PSR 2009 - European Agency for Safety and Health at Work

3. Statistical background information
3.1 Sources for statistical background information
According to the call for tender, weighting of the ESENER 2009 was to be done on base of the
same 10-cell matrix which was used for the sampling. For a further improvement of quality, we
however decided to broaden this matrix to a 15-cell matrix by further differentiating within the
“Services” section between sectors of activity mainly made up by private organisations
(“Private Services”) and sectors made up mainly by public entities (“Public Services”).
Attention:
It should be noted that the sector shortly called “Public Services” here is not exclusively
made up by public organisations. Especially in NACE Rev. 1.1 M & N /Rev 2 O & P
(Education and Health and Social Work) also many private organisations are to be found (e.g.
private schools and private hospitals).
Table 3.1.1: Weighting matrix 14 :
10 - 19 employees
20 – 49 employees
50 – 249 employees
250 - 499 employees
500 + employees
Sector: 1. Producing Industries 2. Private Services 3. Public Services
NACE Rev.1.1 C-F
NACE Rev. 2 B-F
NACE Rev.1.1 G-K & O
NACE Rev. 2 G-N & R-S
NACE Rev.1.1 L-N
NACE Rev. 2 O-Q
In order to be able to weight the data according to this matrix, statistical information in at least
this differentiation (i.e. by the 15 cells defined in the weighting matrix) had to be collected.
Collecting the statistical information on the universe was among the tasks attributed to the
national fieldwork institutes. From their experience with other business surveys, they are
familiar with the availability of business statistics in their country. The national institutes were
provided with a template for filling in the available figures in a standardized form. On this
template, they were asked to provide the following figures:
Distribution of establishments 10+ (if not available: companies) over the various cells of
the matrix
Distribution of employees working in establishments 10+ (if not available: companies 10+)
stratified by the cells of the matrix
If available: Distribution of establishments (if not available: companies) by NACE 1-digit
level and size-class
14 For Belgium a slightly different matrix was used for the weighting since there statistics were
available only in size bands 50-199/200-499 instead of 50-249/250-499.
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