Using Hobfoll’s Conservation of Resources (COR) theory as the theoretical framework, this study explored the effectiveness of organizational communication in attenuating the negative effects associated with job insecurity on employee attitudes, behaviors, and physical health. Data were collected from 639 employees in six different companies. As predicted by COR theory, results suggest that high job insecurity is related to lower job satisfaction, more workplace accidents, and more health complaints. However, employees who perceived higher levels of positive organizational communication practices reported fewer negative consequences of job insecurity compared with employees who reported lower levels of organizational communication. Taken together, it is suggested organizations that make a greater effort to communicate with employees may effectively buffer the potentially negative consequences of job insecurity.