Corporate social responsibility is a concept of managing a company in a way that makes a profit while meeting social conditions as well as environmental protection criteria with the goal of sustainability and satisfaction of all stakeholders involved. Social responsibility is a continuous process of negotiating and redefining the achievable and is becoming an increasingly important component of the business of a modern company that wants to meet increasingly demanding legal, environmental, ethical, commercial, and public standards. This paper will present the development of social responsibility as well as its response to the challenges of the modern age such as the corona virus pandemic. The paper begins by defining the basic concepts related to social responsibility, chronological development, and theories that have emerged over time. Furthermore, areas of social responsibility such as economic sustainability, the working environment, environmental protection, and market relations in addition to investing in the community will be analyzed in more detail. In the practical part of the paper, on the examples of two companies operating in a similar industry, but of significantly different sizes, the results of successful implementations of the concept of corporate social responsibility in the overall business strategy are presented. The aim of this paper is to elaborate on the concept of corporate social responsibility compare how it has responded to modern challenges and analyze it on the example of best practice. In addition to the qualitative research method, interviews use secondary sources of data such as scientific papers, statistical reports, newspaper articles, and the like.