This book considers what is at stake for professionals whose work increasingly involves communicating in linguistically and culturally diverse contexts, and argues for the need to better understand the crucial role of languages and cultures in the modern workplace. With a focus on the experience of multilingual professionals, the author's position is that such professionals, exemplified by those who have relocated internationally, deploy their unique linguistic, cultural and intercultural repertoires in their work. This book examines the ways in which professionals interpret and manage their experience of working within and across languages and cultures in ways that create affordances for them, their professional practice, and those who depend on their knowledge and expertise. It will be relevant to undergraduate and postgraduate students undertaking studies in applied linguistics, sociolinguistics, intercultural education and professional communication in any discipline.