Introduction: Shared leadership, collective leadership by the team and by the decision and sharing responsibility for results, have been described. Shared leadership by increasing member participation rate and knowledge sharing, learning in working groups would increase and the effectiveness of group work. Based on these considerations, the study examined, the role of mediator knowledge sharing in the relationship between shared leadership and effectiveness of group work of sport and youth workers in West Azerbaijan province was conducted.
Methodology: The research method is descriptive survey and the purpose practical. the population of this study included all administrative employees of general youth and sports Western Azerbaijan province are 220 of us. The sample was considered as a whole number. In order to collect data, a questionnaire of Shared Leadership cartoon, share knowledge questionnaire Hslt (2003), and Effectiveness of Group work questionnaire Nasr and colleagues (2013) , was used. To analyze the data, structural equation modeling and path analysis were used by the LISREL software.
Results: The results showed that according to the value of indexes matrix descriptive of variables correlation the relationship between variables is significant (P≤0.01). Also, according to the proposed model, we can say that, Shared Leadership Positive and moderate effect on knowledge sharing and positive effect on the effectiveness of group work is high. Knowledge sharing, positive and medium effect on the Effectiveness of group work
Discussion: According to the obtained results, for more effectiveness of group work in sports and youth departments is recommended The director of the organization, the opinions of all the staff use that it makes more people to share their knowledge and teamwork are encountered with more efficiency.