Summary
En este artículo se pretende explorar este concepto, a través de su supuesto origen, su carácter jurídico, su validez económica y su utilidad política, para aclararlo. Es importante resaltar que aunque existe subsidiariedad en varios niveles, aquí se estudiará principalmente al nivel de la relación entre el Estado y el organismo supranacional, con énfasis en la experiencia de la Unión Europea.
Summary
From the point of view of integration dynamics in the European Union. the subsidiary principle has become a common word between journalists politicians and economists without it is known exactly the conceptual dimension of itself, In this contribution it's seek to explore this concept, towards its origin, its law character, its economic validity and its politic use, to, then try to clarified it. It's important to stand out that even if exist subsidiary at different levels, here will be studied mostly at the level of the relation between the State and supranational, with emphasis in the European Union experience.