Abstract
Once rich and flourishing Czech collective labour law world has been profoundly changed during Nazi and mainly Communistic Ara, where the role assigned to collective agreements was diminished to a soft plan implementing directives of the state. After our return to democracy, it is obvious that we have to adopt not only regulations but also to re-build informal structures.
The principle of favour has been allowed in Czech labour law only to a limited extent not mainly owing to a constant wave of legal reforms and statutes amendments but because it takes too much time to re-shape scholars, justices and legal practitioners educated in different legal cultures to think creatively.