The 10^th International Conference on the Prevention of Accidents at Work (WOS 2019) tool place in Vienna on 23-26 September 2019. The Congress, focusing on the prevention of workplace accidents – WOS: Working on Safety – aimed at bringing together experts from all over the world in order to facilitate a high-level exchange of experience, new findings and good practice solutions. The Congress was an excellent occasion for representatives of H&S organizations, labour inspectors, safety professionals, researchers, policy makers, labour administrators and other experts to broaden the personal prevention horizon and to get in touch with experts from other countries and other safety-cultures.