This paper presents a framework for studying the concepts of fit and flexibility in the field of Strategic Human Resource Management (Strategic HRM) focusing on HRM practices, employee skills, and employee behaviors and reviews past conceptual and empirical work within that framework. A model of Strategic HRM is presented and this model is used to explore the concepts of fit and flexibility as they apply to Strategic HRM. The concepts of resource and coordination flexibility are applied to Strategic HRM, and the implications of the framework for both the practice of and research on Strategic HRM are discussed.