This Special Issue contributes to the understanding of the role of language division of labour across occupations. Articles on this Issue contributes to sociological understanding and critical dialog with human capital perspective in the context of Information Society, where language have a central role in production precesses. It is, since information as raw material and product is linguistically encoded, language occupies a central role in new forms of division of labour. Main question in this introduction and following articles is to what extend social changes of information centrality at the production level involves reproduce or create new social inequalities observables through the lens of language division of labour within occupations. Although progress has been made in cross-cutting knowledge about competencies in the information and digital environment, little is known about specific linguistic needs across to occupational classifications. Given the widespread of alphabetization, literacy is today’s taken for granted in common sense as a condition sine qua non for entering labour markets, instead of a stratifier across occupations and social structure. Nevertheless, in this Special Issue authors show that language of origin, second language knowledge, and other literacies, such as communicative skills become key stratifier factors. This is observable both at the territorial level, types of literacies as well in specific and sophisticated language professions.