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Background: Scene time is one of the performance indices in pre-hospital emergency system. This research has been done with aim to improve the performance indices of emergency medical technicians with using motivating potential score in the Job characteristic model. The main purpose of this investigation is to answer to this question: what relationship does exist between Job characteristic and scene time of emergency medical technicians? Materials and Methods: This research is a correlation study. Data has been gathered from 45 emergency medical technicians and has been analyzed by SPSS software in term of descriptive statistic, Pearson’s coefficient and U test. Results: The results show that significant relation exists between Job characteristic and scene time of emergency medical technicians (r= -0.28). In fact, only skill variety, task significance and feedback with negative correlation coefficients (-0.34, -0.37, -0.44) have a significant relation with average of scene time. There is not any meaningful relation between demographic variable and average of scene time (p>0.05). The results also indicate that all variables of Job characteristic exclude skill variety have less average than global average. Conclusion: Regarding to the results of this investigation, emergency management must pay peculiar attention to the Job characteristics of emergency medical technicians and improve the performance indices through increasing the Job characteristic.

Keywords: Job characteristics, Scene time, Emergency Medical technicians

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