Adult learners working in technical jobs in an international context. In-work learners who are technicians, engineers, supervisors, or team leaders. People who need to communicate with co-workers (frequently also non-native users of English) about very practical technical subjects – installations, working practices, processes, problems, etc. People who need to communicate by e-mail, make telephone calls, and read and understand manuals written in English. Above all, people whose main aim is to communicate effectively in English to get the job done.