When gaps in the data are revealed by comparing all of these sources with the results of previous years, why the missing information is replaced by data for the same civil servants (or their predecessors) in the last post of employment in which they were actually surveyed.

Their remunerations are also updated, based on the general salary increases and the variations in payroll taxes that may have occurred between the two dates.

Estimates have been provided for civil servants in the COMs each year since 2000.

In addition, by comparing all of the data for one year with the complete database for the previous year, it becomes possible, if necessary, to gather information which was previously impossible to obtain (e.g. status, salary index, specific job description, municipality in which the job is based).