Chris Wright writes in his book Worker Cooperatives And Revolution “the conceptual starting point of the worker coop is that labor has power over capital, whereas it is the opposite in conventional business. That is, in a capitalist enterprise both ownership and control (and the right to a share in profits) ultimately belong to investors, and voting rights are proportionate to the number of shares of equity held.” I highly recommend his book, it is a great look at their history in the United States, their practices today and he also provides a good theoretical analysis.