An interesting aspect of British research on unions based on the Workplace Industrial/ Employment Relations Surveys has been the apparent shift in union impact on establishment performance in the decade of the 1990s compared with the 1980s – and the recent scramble to explain the phenomenon....

This paper offers a critical evaluation of the notion of collective voice, advanced by Freeman and Medoff (1984) in their pioneering contribution What Do Unions Do? It takes note of theoretical and empirical work supportive of/consistent with the collective voice/institutional response model,...