Organizational culture is a set of values, norms, and practices that shape behavior and relationships within a company. Organizational culture can motivate employees, shape their work habits, and influence their productivity. Leadership is primarily responsible for creating a positive organizational climate and culture, which is why it is important for leadership to have good communication skills and an understanding of the different behaviors and habits of each individual in the team. Each team member brings something unique to the company, and by merging the habits and behaviors of team members, a unique collective culture is formed. Leadership is crucial in creating organizational culture and should lead by example to show employees how to make ethical decisions, i.e., decisions that do not harm anyone and contribute to business success. Business ethics is not just a set of rules but a key part of organizational culture and strategy. It improves efficiency, commitment, and innovation, while simultaneously contributing to a competitive advantage and long-term business success. Organizations that recognize and integrate ethics into all aspects of business are better prepared for challenges and achieving sustainable growth. The goal of this paper is to explore the concept of ethics and organizational culture, and the methods managers use in situations of ethical dilemmas. The empirical part of the paper will examine the operations of Crisis Innovation Lab d.o.o. – the largest 3D printing factory in Croatia. The company's organizational culture, the application of ethical principles, and interpersonal relations within the company will be analyzed. Establishing ethical norms in the organization is a prerequisite for achieving business success and business sustainability.