Increasing WHP prevalences were observed in all company sizes and economic sectors. In both surveys, employees in small companies reported significantly less WHP than those in large companies. Of all economic sectors, industrial manufacturing still showed the largest diffusion of WHP, even though the gap to other sectors has narrowed since 2006. The proportion of respondents who individually participated in WHP (if available) has slightly declined. The most striking difference in participation rates -which has even increased over time -is between small and large companies. Conclusions: Our findings indicate a moderately increased prevalence of WHP in Germany. At the same time, data still suggest a considerable need for WHP-related advice and support, particularly in small companies. On the basis of the analysed data, however, no statements can be made about qualitative characteristics of WHP activities in Germany.