Highly educated and skilled personnel is a key resource for science and technology. By definition, the reserve is formed by persons who have at least lower tertiary qualifications or work at demanding expert tasks. Those with researcher training are of particular interest. The statistics describe the development of the reserve of human resources of science and technology, demographic structure, placement in work and mobility. The OECD and EU recommendations are observed in the compilation of the statistics. The data are used by public science and technology administration, regional authorities and planning units and researchers. Personnel indicators are the key indicators describing the resources of science and technology.