Abstract
Deinstitutionalization refers here to the erosion or discontinuity of an institution alized organizational activity or practice. This paper identifies a set of organiza tional and environmental factors that are hypothesized to determine the likelihood that institutionalized organizational behaviours will be vulnerable to erosion or rejection over time. Contrary to the emphasis in institutional theory on the cultural persistence and endurance of institutionalized organizational behaviours, it is suggested that, under a variety of conditions, these behaviours will be highly susceptible to dissipation, rejection or replacement.