This research report prepared by Katarina Hollan and Sonila Danaj in the frame of the POOSH project provides first insights on the occupational safety and health (OSH) vulnerabilities of posted workers in Austria. The authors explain the multiple vulnerabilities posted workers face in the country, spanning from employment and contractual conditions, wages and working conditions, social and health insurance, to accommodation, language barriers and social isolation. The national OSH structures, mechanisms and procedures as well as cross-border institutional exchange on the OSH of posted workers are also discussed. The report finds that although Austrian authorities have undertaken substantial efforts to reduce the vulnerabilities of posted workers, some issues remain. They persist both in terms of OSH and other aspects of posting, such as working time or remuneration.