Language Policy and Planning is currently a significantly diversified research area and thus it is not easy to find common denominators that help to define basic approaches within it. Richard B. Baldauf attempted to do so by differentiating between four basic approaches: (1) the classical approach, (2) the language management approach (Language Management Theory, LMT), (3) the domain approach and (4) the critical approach [Baldauf, R. B. (2012). Introduction--language planning: Where have we been? Where might we be going? "Revista Brasileira de Linguística Aplicada," 12(2), 233-248]. This paper takes up this classification and seeks to show the main features of LMT, while highlighting the features that it shares with the other approaches and the features that are unique to it. This is done against the background of Baldauf's works and their contribution to the spread of LMT.