Book excerpt: Case studies of the relationship between workers self management and workers control and social change, with particular reference to the USA - discusses psychological aspects (occupational psychology) of working in self-managed enterprises; investigates workers cooperatives, production cooperatives, insurance corporation, legal office and experimental school in Spain, the UK and the USA; considers the functioning (incl. Legal aspects) of American workers' cooperatives, and trade union attitudes. Diagrams, references, statistical tables.