The individual chapters o f this book collectively present perspectives on how professionalism and professional boundaries have been re-defined. These exam ples have been drawn largely from health and social welfare fields and are based upon recent research. The suggestion o f Abbott (1988) that a way of thinking about professional work is as something that is defined and re-defined through continuous struggle between occupational groups is as valid now as it was then. Professionalism is viewed as a shifting phenomenon, with the values and at tributes o f professionals subject to change and struggle. The discourse o f enter prise (du Gay 1992) referred to continuously has contributed to profound organisational change, impacting upon professional workplace practices in both public and private sectors.