The power ofmodeling of manufacturing systems can be enhanced through the application of reusable and pluggable modeling constructs. In this paper we discuss a framework for model reusability and how the seperation concept together with object oriented paradigm support this capability. We then discuss the importance of reusable and pluggable organizational controls in a modeling environment. Several important issues related to the implementation of reusability and pluggability are summarized. Examples are presented to illustrate our approach for implementing reusable and pluggable organizational controls.