This didactic unit is aimed at the fifth semester students of the Business Administration, Marketing and International Business program, who have already completed the four basic levels of the Open Lingua program. This proposal seeks to develop skills and competencies that allow them to perform in different fields related to private, public and solidarity economy companies, and in various mediation and negotiation processes at national and international levels. The instructional design of this unit contains real-life situations, focused on the world of business, that allow students to interact in various types of business events. The grammatical and lexical concepts, necessary to interact successfully in these types of communicative situations, are introduced and applied. The educational activities are designed to offer opportunities to interact in business conferences, international exhibitions, and seminars, among others. The contents are framed in natural and meaningful contexts. This leads to a greater understanding of the type of language used in business and the way it is used to communicate. The contents are structured in three lessons in which the level of complexity of the topics, tasks, texts and transitions (4Ts) have been considered. Also, various types of activities that activate and reinforce previous knowledge and that, subsequently, evaluate the progress of the students, are included.