We provide the first econometric study of efficiency for a member of the Mondragon group of worker cooperatives. Eroski is a retail distribution chain and, most unusually, there are two distinct types of hypermarkets: (i) cooperatives with significant employee ownership and voice; and (ii) GESPAs...

A series of observations on various types of cooperatives is constructed from intermittent surveys between 1920 and 1950 and, where possible, these are extended to recent years. These observations allow several questions to be taken up: how well have organizations that resemble consumers'...