Social demands of social democrats were based on ideas of social justice submitted in the Marks’s theory as a major principle of the fair society order: "free development of everyone is a condition of free development of all people". The article analyzes V.I. Lenin’s point of view, how to improve social status of Russian workers in capitalist conditions and his ideas on satisfaction of social needs of postcapitalist society members.

Key words: social functions, social justice, state, capitalism, socialism, communism.