For Durkheim, solidarity, the moral force of society is fundamental for understanding of cooperation and thereby functioning of society. The role of division of labour which implies cooperation is precisely to fulfil certain needs of society. It is simply system requirement. For Marx, cooperation is not voluntary in a society where class exists. He argues, “The social power i.e. multiplied productive force (surplus) arises through the cooperation of different individuals as it is caused by the division of labour. Cooperation is not voluntary but naturally. In this enforced cooperation, workers lose control over how to organise their own work and they lose control over the fruits of their labour".