Marx regards labor - working with the material world - as the primary domain in which we should realize our freedom in autonomously realizing ourselves as individuals, as members of the human species, and as in community with others. When we can fully identify with the product and process of labor, its consequences for self and others, when there is mutual recognition and affirmation of the value of these consequences - that the workers have satisfied others' needs for the others' sakes, and the others manifest their appreciation of that fact - and all of this is freely willed, then labor is unalienated, and hence free. Failure of any of these conditions entails that we are engaged in alienated labor. Alienated labor is labor that we can't identify with or affirm as an expression of our autonomy. It is unfree labor.