Social ownership refers to the various forms of ownership for the means of production in socialist economic systems; encompassing public ownership, employee ownership, cooperative ownership, citizen ownership of equity and common ownership. Historically social ownership implied that capital and factor markets would cease to exist under the assumption that market exchanges within the production process would be made redundant if capital goods were owned by a single entity or network of entities representing society, but the articulation of models of market socialism where factor markets are utilized for allocating capital goods between socially owned enterprises broadened the definition to include autonomous entities within a market economy. Social ownership of the means of production is the common defining characteristic of all the various forms of socialism.
The two major forms of social ownership are society-wide public ownership and cooperative ownership. The distinction between these two forms lies in the distribution of the surplus product. With society-wide public ownership, the surplus is distributed to all members of the public through a social dividend; with co-operative ownership the economic surplus of an enterprise is controlled by all the worker-members of that specific enterprise.
The goal of social ownership is to eliminate the distinction between the class of private owners who are the recipients of passive property income and workers who are the recipients of labor income (wages, salaries and commissions), so that the surplus product (or economic profits in the case of market socialism) belong either to society as a whole or to the members of a given enterprise. Social ownership would enable productivity gains from labor automation to progressively reduce the average length of the working day instead of creating job insecurity and unemployment. Reduction of necessary work time is central to the Marxist concept of human freedom and overcoming alienation, a concept widely shared by Marxist and non-Marxist socialists alike.