Background: Productivity is a philosophy, culture, belief, and social insight whose promotion indicates the growth and development of societies, and its increase as an unavoidable necessity to improve life quality, more welfare, and so on for human beings is considered a general goal for all the countries in the world. Therefore, in this direction this analytic-descriptive study was carried out communicatively to determine the effective factors on staff productivity in Lorestan University of Medical Sciences in 2000.
 Material and Methods: In this research all the personnel and managers of the university were selected as the samples and a questionnaire was used as the data collecting instrument which consisted of two sections of the demographic information and the information concerning the effective factors on productivity. The productivity factors section of the questionnaire included 26 questions of seven categories and measured the effective factors on productivity. A very low to very high Likert Scale was applied as the basis of scoring, and finally the scores were interpreted as follows: very low and low as ineffective, moderate as moderately effective, and high and very high as effective. The validity and reliability of the questionnaire were acquired using content validity and test-re-test procedure respectively. The data were collected using the questionnaire and were analyzed using descriptive and inferential statistics (EPI6, chi-square).
 
Findings: The results of the study concerning the degree of importance of effective factors on productivity showed that job identification (89.4%), power (86.4%), motivation (85.6%), environmental factors adaptation (74.1%), organizational support (81.2), reliability of decisions (79.3%), and practice output (72.4) were found to be the first to seventh most important factors on productivity respectively. Moreover, significant relationships were found between the above-mentioned factors and some individual variables such as place of work, level of education, and job experience.
Conclusion: The results showed that productivity is highly dependent on the seven above-mentioned factors. Thus, managers have to establish realistic policies and value working so that individual, managerial, and organizational objectives will go in the same direction resulting in effectiveness and productivity.