The paper is concerned with methodological aspects of using Case studies in Business English language teaching at University level. It emphasizes the benefits and opportunities of the Case study method as well as the role Case studies play in practicing and developing language, business communication and managerial skills. The paper analyses Case study as an example of Task-Based Learning (TBL) method which focuses on communicative approach towards problem solving tasks presented in authentic Case studies. The paper deals with language and subject matter integration in the creation and implementation of Case studies in the Business English classroom which involves collaborative work of English language and subject matter lecturers. The integrated approach strengthens both students’ subject matter knowledge and language competence. The result of lecturer collaboration is the creation of Case study “Rukisu teja” which is based on a real Latvian family-run business and can be incorporated into both Business English and Entrepreneurship courses.