BEYOND MAIN EFFECTS OF UNILATERAL TRUST ON ORGANIZATIONAL 
                                CITIZENSHIP BEHAVIORS : 
 EXAMINING TRUST EFFECTS BETWEEN STORE MANAGERS AND STAFF IN CHAIN 
                                      ORGANIZATIONS 
                                         Dora C. Lau 
                                  Department of Management 
                              Faculty of Business Administration 
                               Chinese University of Hong Kong 
                                          Shatin, N.T. 
                                          Hong Kong 
                                   (Phone) +852 2609-7793 
                                     (Fax) +852 2603-6840 
                               doralau@max.book118.com.edu.hk 
                                         Long W. Lam 
                              Faculty of Business Administration 
                                     University of Macau 
                                 Av. Padre Tomás Pereira S.J. 
                                             Taipa 
                                            Macau 
                                    (Phone) +853 397-4877 
                                      (Fax) +853 838-320 
                                      ricolam@umac.mo 
This study was partially supported by a grant from the Research Grants Council of the Hong 
Kong Special Administration Region, China (Project No. CUHK4147/03H) and a direct grant 
from the Chinese University of Hong Kong (Project No. 2070281) to the first author. 
        Beyond Main Effects of Unilateral Trust on Organizational Citizenship Behaviors: 
       Examining Trust Effects between Store Managers and Staff in Chain Organizations 
                                           ABSTRACT 
        Prior research on interpersonal trust showed robust findings on the positive relationship 
between unilateral trust and organizational citizenship behaviors in vertical dyads.  Drawing on 
interpersonal trust and social exchange theories, we propose that mutual trust between managers 
and staff has an additional effect on organizational citizenship behaviors that is beyond the sum 
of unilateral trust.  Results support our hypothesis: managers’ trust for staff mattered most on 
organizational citizenship behaviors when there was low staff’s trust for managers.  In addition, 
we found that store size moderated the relationship between manager’s trust for staff and 
organizational citizenship behaviors.  Theoretical and practical implications were discussed. 
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Beyond Main Effects of Unilateral Trust on Organizational Citizenship Behaviors: 
Examining Trust Effects between Store Managers and Staff in Chain Organizations 
        Many benefits of interpersonal trust were recognized in recent research findings.  One 
robust finding is that interpersonal trust and organizational c

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