A critical problem facing modern organizations in a variety of setting
s is the erosion of slack. Given narrowing performance margins allowed
many organizations, managers are tempted to ''lock in'' organizationa
l performance through elaborated rules and procedures, formal authorit
y assignments, and clearly differentiated job responsibilities. A case
study of one organization seeking very high reliability in its perfor
mance - a nuclear power plant-is offered ta demonstrate a contrary poi
nt of view. Reliability, it is argued, can best be achieved not throug
h attempts at organizational invariance but through the management of
fluctuations in important organizational relationships and practices.
This strategy enhances reliability while preserving the protective fun
ctions of organizational slack