Introduction: One of the skills of management is decision making, and the role of managers in decision making always is very critical. The thinking at in the 21st century ,needs to approaches that meanwhile increase the job orders , to encourage a systemic approach, and improve the relation, is focusing on employers participation. Participation in decision making make a viable organization, the conditions in that more yield opportunities to achieve organization targets.The aim of the present research was to determine the head-nurses participation in decision making at the educational hospitals of IUMSHS (Iran University of Medical Sciences & Health Services), 2006. 

Methods: This research is a cross-sectional study. The data collection tool was a self-reporting questionnaire. In this research, 94 head-nurses working in the educational hospitals of IUMSHS, all having an employment background of over 6 months in their present ward, were interviewed, and thus formed the study sample. The research environment consisted of all the educational hospitals of IUMSHS, 2006, Tehran, Iran.

Results: Data analysis revealed that 40.4% of the head-nurses reported their participation in decision making moderately, a relatively strong and statistically significant correlation observed between participation in decision making and types of hospitals wards(X2=5.735and ρ<0.05).

Conclusion: Regarding the results of the research, offering opportunities to head-nurses to participate in decision making would have a critical role Thus, to achieve a clear understanding of participative decision making in health care organizations of our country, we suggest more comprehensive research regarding participatory decision making at nursing level and other health care professions, and its relation to important organizational outcomes.