Abstract
In general, the class formation is the development of the division of population in material process into one in ideological process. In particular, the class formation of factory worker who has become conscious of his own class interest is the development of the intra-class assimilation into intra-class unification. This happens easily under two conditions ; one condition is that element which determines the material process of class formation changes to increase intra-class assimilation and inter-class differentiation. The other is that every element which determines the ideological process of class formation changes to unify working class against final captors of surplus labour. These conditions are provided by the socialisation of production. This equalize the every factory which differ in technology, size and division of labor. The change of every element which determines the process of class formation to this direction, develops intra-class assimilation into intra-class unification.
