This study investigates factors associated with the adoption of corporate restructuring by hospitals in Massachusetts, where restructuring occurred much more rapidly than it did nationally. Drawing on studies of management innovation in hospitals, this article hypothesizes that early adopters will differ from those that adopt later on the basis of individual and organizational factors, and that institutional forces will explain later adoption. The findings show no differences between early and later adopters but do show that after an intense period of restructuring, hospitals became less likely to adopt the innovation. The article concludes with a discussion of the impact of reimbursement laws on the adoption pattern and the implications for the diffusion of management innovation, particularly under health care reform.