Journal of School of Public Health and

People, government and Health Insurance organization’s (HIO) spend a great deal of mony each year in Health sector. They expect an effective and acceptable outcomes as well as wellutilization of all resources (including Human Resources). The goal of this article is studying the effects of managerial styles employed by Hospitals heads on operational indices among Iran’s public hospitals. The study is a cross- sectional one and data collected cross- sectionally. Study population includes 355 public hospitals which were divided in 3 categories as large (>400 bed) medium (200 – 400 bed) and small (<200 bed). A questionnaire was used for data collection and interviews also conducted for the same purpose. The questionnaire included question about styles of leadership as well as operational indices. Leadership types determined as lycert models (4 styles). Findings demonstrate the effects of Hospitals head’s leadership styles on increase of decrease of outcome indices among study population. A cording to the findings participatory management has had more positive effects on the indices than the 3 other styles had.