Since 2007, KMU Forschung Austria has regularly analysed the situation and development of One-Person-Enterprises in Austria. In addition to updating relevant key figures on the characterisation and entrepreneurial activity of One-Person-Enterprises, the study also deals with hybrid One-Person-Enterprises (simultaneous self-employment and employment). In addition, the resilience of One-Person-Enterprises is examined and different types of One-Person-Enterprises are identified. The methodology is based on a quantitative survey of One-Person-Enterprises and a comprehensive literature review.