This study aims to identify the main elements that define the very practical, but at the same time quite unknown, institution of "labour foundation", as the specific type of foundation related to labour issues. It is quite obvious, that single concepts of neither "foundation", nor "labour foundation" actually exist. However, just as it has been possible to build a general concept of "foundation", based on shared characteristics, the purpose of this research is to find those that are common to so-called "labour" and, thus, to provide a flexible definition of what the term might be understood as. Moreover, we will consider what kind of role the labour foundation can play in modern society and today's labour market. To achieve this target, we have used a very practical methodological strategy, that is, analysing the main cases of "labour foundations" in the international arena and trying to define these essential basic features.