One of a public budgets’ largest expenditure items is personnel expenditure. In addition to active duty personnel expenditure, it becomes increasingly important to take into account the expenditure on the old-age pensions for retired public officials, judges and professional soldiers. The results of the statistics on public service personnel and on public service pensioners are a basis for political decisions to be taken on the further development of legal provisions on public officials and their remuneration and pensions as well as on collective agreements. They provide important basic data to be used for changes in the public old-age pension system and serve as a basis for projections of future expenditure on pensions and related benefits. Taking into account that public officials are not obliged to contribute to social insurance, personnel statistics are the only comprehensive source of information to supplement the data collected by the Federal Employment Agency on employees subject to social insurance contributions.