Increasingly turbulent changes, processes of globalization, internationalization, new needs and strengthening competition, with limited resources, have created the need for a sustainable system. The concept of sustainable business is based on the mutual contribution of businesses and the community as the only way to survive in the long run. The main goal is not extra profit but the sustainability of the process and business, which means the development and progress of all stakeholders through socially responsible behaviour. Sustainable business management requires constant monitoring of the business situation, changes in the environment and review of goals, as well as adjustment to observed trends. It is based on the controlling function, so it is the main backbone of sustainable business. In order to research the role and contribution of controlling to sustainable business, AD Plastik company was chosen. The research was conducted by surveying employees on the topic of controlling and sustainable business. It was noticed AD Plastik organizes and manages business processes based on strategies that arise from the findings of controlling. Although they operate according to the principles of sustainability and develop controlling as a management function, there is still space for improvement. This is expected because industry and the environment are a dynamic set of elements that affect the business individually and in interaction, so the company must constantly adapt to them, both in terms of strategies and in terms of the functioning of controlling as the backbone of sustainable business. The improvements of controlling function include communication relations, the possibility of greater interaction within operational controlling and a greater degree of integration that would unite all business processes and give a more precise picture of business in interaction with all elements of the environment.