With big data comes big responsibility. Issues such as data protection, workplace surveillance, or the potential consequences of future technologies require constant ethical reflection and stakeholder dialogue. This Expert Group will offer a forum to discuss ethical issues that matter to its members in their respective contexts, enabling them to develop concrete solutions for ethical challenges. Such issues may range from professional ethics (legitimate conduct as a professional in various work-related scenarios) to organizational aspects (data collection, usage, and processing within companies) to legal and political issues (data protection, industry agreements, codes of conducts, standards and labels, and public decision-making processes). The main goal of the group is to develop and foster competence regarding ethical issues in data usage, and to make sure that state-of-the-art approaches are shared so they can be applied by group members in their respective fields.