The distinctive approach considered in this article is indirect participation through forms of non-union employee representation (NER). NER has been practiced in industry for more than a century, with considerable diversity and variation both across countries and over time. This article defines NER and provides a thumbnail sketch of its historical evolution. It describes the various forms of NER and its alternative functions. The article then synthesizes these diverse forms and functions into four distinct models/strategies of NER (called the ‘four faces’ of NER). Furthermore, it provides a brief overview of theorizing on NER. The article surveys the recent empirical literature on NER, with an emphasis on evidence regarding NER's performance and strengths and weaknesses. It ends with a brief recapitulation of the main theme; that is, that NER exhibits great diversity in form, purpose, and outcome, and that sweeping generalizations are therefore hazardous.