Business morality, a set of moral principles that define the behaviour of participants in business communication; unwritten rules of behaviour that every business person should obey. Even at litigations, courts as a rule rely on principles of business morality, which often supplement legal norms and serve the legal practice as a source of interpretation when drafting the contents of legal norms. Rules of business morality require correct, good, well-meaning, honest, etc. relations, as well as fulfilment of all obligations precisely and on time.