Higher Education Institutions (HEIs) are place contributing to the intellectual advancement of the nation, quality human resource, and to a number of socio-economic improvements for society and organizations. Despite facilitators and staffs are the bare-bone of HEIs, there is a scarcity of research, both conceptual and empirical, focusing on their organizational citizenship behaviors (OCB). To attempt to fill this gap, this article develops a conceptual model of OCB under influencing of organizational justice and job satisfaction. The prospective respondents were chosen randomly from HEIs (public and private). Individuals have been employed at least one year and above will be the unit of analysis in which the experimental test of the proposed model will be conducted. The results suggest that organizational citizenship behavior is one of the most important factor influence the organizational performance. Furthermore, the performance of HEIs does not affect only the national human resources, but also impact on national economy. In this context, a conceptual framework is proposed to study the determinants of organizational citizenship behavior in the form of organizational justice and job satisfaction. Additionally, the ultimate benefits of OCB through perceived organizational justice with job satisfaction as mediator is enlightened. Finally, the authors discuss the managerial implications of their research.

Abstract
 1. Introduction
 2. Conceptual Framework andHypotheses Development
  2.1. Organizational Citizenship Behavior
  2.2. Organization Justice
  2.3. Relationships between Organization Justiceand Employee’s Job Satisfaction
  2.4. Relationships between Organization Justiceand Organizational Citizenship Behavior
  2.5. Relationships between Employee’s JobSatisfaction and OCB
 3. Research Methodology
  3.1. Measurement Issues
  3.2. Unit of Analysis
  3.3. Statistical Data Analysis
 References

• Le Nguyen Thanh Dong(International University, Vietnam National University)
• Nguyen Ngoc Duy Phuong(International University, Vietnam National University, Ho Chi Minh City) Corresponding Author