Abstract: The ontology of Marx’s philosophy is labor ontology, its methodology is dialectics of labor and its historical view is the historical view of labor. Marx stresses to understand the world from the view of labor, and understand the world in the unity of opposites between subject and object; the historical view of labor does not grasp the essence of society through material, but from the production practice of material life known as labor, which does not emphasize that material determines social life, but stresses that the production practice of material life known as labor determines social life. The Marx revolution in legal methodology is not identifying law as a spiritual phenomenon, or emphasizing the decisive role of matter to spirit, but stresses that the practice of material life known as labor is the basic and main social practice, which determines other social activities; thus the review of legal activities as legislation, law enforcement, judiciary and law-abiding, should start from production practice of material life known as labor. Labor is the golden key to all mysteries of the legal phenomenon.

Key words: Marx, labor philosophy, dialectics of labor, historical view of labor, legal methodology