•Research in the area of employee engagement and internal communication satisfaction tends to treat both concepts as one-dimensional.•In this study we explored the relationship between multidimensional ICS and multidimensional employee engagement concepts.•Our study confirmed that internal communication satisfaction has a significant role in high employee engagement.•Most relevant ICS dimensions for EE were satisfaction with feedback, informal communication and communication during meetings.•What matters most is that internal communication and employee engagement “feed” each other in a continuous virtual circle. Engagement is becoming one of the more popular concepts in various social sciences including psychology, organizational behavior, human resource management, and of course public relations. Even though engagement is applied in several areas of public relations, it is most commonly explored in connection to internal communication. The purpose of this paper is to make a contribution to the growing body of research exploring the relationship between internal communication satisfaction (as a part of internal communication) and employee engagement. Principally we wanted to test the relationship between the eight dimensions of internal communication satisfaction and three employee engagement dimensions.