This article discusses how the solidarity can be present structuring a platform for promoting local development. Our argument is that such a platform involves the prospect of another economy and another mode of development in which principles and values of a market self-regulation does not occupy the centrality in relations of exchange. The idea is to show that this platform sets a general concept of promoting development, defined here as a sustainable path-solidarity. After contextualize the problem by placing the relevance of that today, the text critically discusses the most commonly adopted solution to deal with the lack of work. Furthermore, it discusses that sustainable and solidary based ways and also their bases and theoretical foundations and for the end approaching the construction of this practice by taking into account its main challenges.