Worker cooperatives in Argentina have experienced important changes since the beginning of the nineties and their presence became meaningful from 2003 onwards, due to the stimulation of public policies oriented towards their promotion. Similarly to the context under which they were formed, the unfavourable economic conditions and the worsening of work and life conditions of workers played a major role in the rebirth of the sector. Based on case studies, the article suggests an organizational typology which considers business and associative performance of work cooperatives. The typology accounts for the diverse organizational dynamics and meanings the cooperative model adopts.