Organizations implement their business strategies through the human resource (HR) practices they use. These practices are major determinants of employees' psychological contracts. How employees interpret the terms of their employment impacts motivation, innovation, and customer service. This article describes four common types of psychological contracts in US firms and the HR practices that create them. It develops a framework for understanding how each contract shapes employee performance, retention, cooperation with fellow employees and customer responsiveness. It presents recommendations for more effectively managing the link between business strategy and the psychological contract of employees. © 1994 by John Wiley & Sons, Inc.