Designing business models to achieve organisational integrity (OI) is a key challenge for every organisation. Multinational corporations (MNCs) in particular must ensure their decisions sufficiently address urgent problems like climate change, corruption, and poor safety standards in global supply chains. We argue that only a discursive understanding of OI can overcome the deficits of compliance strategies, which often dominate MNCs’ practices. Our “Habermasian approach to organisational integrity in MNCs” relies on the conscious integration of compliance and integrity through discourse ethics and its basic moral principles. In the tradition of classical and social contracts theory, we propose designing such a decision-making process for the justification and implementation of norms and values in MNCs in a two-stage manner, comprising a macro and a micro level. The two stages represent distinct, closely related kinds of contracts: a theoretical macro-contract that defines the normative basis to appeal to all MNC stakeholders and a micro-contract that assigns practical ethical obligations to members in particular host countries.