The current volume of the social science journal PROKLA focuses on Corona with regard to its consequences for social policy. After two years of the pandemic, an interim balance is drawn and critically discussed from different perspectives. Prof. Dr. Manfred Wannöffel, Kathrin Schäfers and Jochen Schroth take a look at the "high-risk area of value chains" and show the scope for action of trade unions in transnational company networks in view of Corona. The article is available at the following link: https://www.prokla.de/index.php/PROKLA/issue/view/210.