en Investigating the role of work overload and sleep deprivation in predicting work situation awareness among workers of one petrochemical industry in Asalooyeh area ● Psychosocial Health مقاله اصيل پژوهشي Orginal Article <p>Situation awareness is an important factor in industrial accidents. Improving situation awareness may help to prevent occupational accidents. Determination of factors influenced on situation awareness will help to plan and implement measures for working condition betterment and developing a safer workplace. In this study, we examined the role of work overload and sleepiness in predicting work situation awareness among workers. The current study was a cross-sectional study. The sample consisting of 180 employees at one petrochemical industry in Asalooyeh area in 2014 was selected according to the stratified random sampling method and responded to questionnaires about demography characteristics, work situation awareness of Sneddon, Mearns & Flin (2013), work overload of Beehr, Walsh & Taber (1976) and Epworth sleepiness scale. The data were analyzed by SPSS software using coefficient correlation and stepwise regression. Statistical differences were considered significant at P<0.01. The results showed that these were internal correlation among work overload, sleepiness and work situation awareness. Also, the results of stepwise regression analysis revealed that work overload and sleepiness significantly predicted, respectively, almost 10% and 24% of variances of work situation awareness among workers. According to the findings of the present study, work overload and sleepiness can predict work situation awareness. To improve workplace safety, interventional measures should focus on enhancing situation awareness via workload and sleepiness reduction.</p> <p style="text-align: justify;">Situation awareness is an important factor in the incidence of industrial accidents. Improving situation awareness may help to prevent occupational accidents. Determination of factors influencing the situation awareness will help to plan and implement the measures for improving working conditions and making a safer workplace. In this study, was examined the role of work overload and sleepiness in predicting work situation awareness among workers. It was a cross-sectional study. The sample consisting of 180 employees at a petrochemical industry was selected according to the random stratified sampling method. They were asked to respond to questionnaires including work situation awareness of Sneddon, Mearns & Flin, work overload of Beehr, Walsh & Taber, and Epworth sleepiness scale. The results showed that there was an internal correlation among work overload, sleepiness, and work situation awareness. Also, the results of stepwise regression analysis revealed that work overload and sleepiness significantly predicted, respectively, almost 10% and 24% of variances of work situation awareness among the workers. Thus, for improving workplace safety, interventional measures can focus on enhancing situation awareness via workload and sleepiness reduction.</p> Work overload, Sleepiness, Work situation awareness, Workers. Awareness, Sleep Deprivation, Workers, Workload 487 494 http://jrh.gmu.ac.ir/browse.php?a_code=A-10-506-2&slc_lang=en&sid=1 Fariba Kiani فریبا کیانی fariba.kiani64@yahoo.com 100319475328460012467 100319475328460012467 No Young Researchers and Elite Club, Shahrekord Branch, Islamic Azad University, Shahrekord, Young Researchers and Elite Club, Shahrekord Branch, Islamic Azad University, Shahrekord, Seyed Hakime Safavi Mirmahale سیده حکیمه صفوی میرمحله 100319475328460012468 100319475328460012468 No Department of Psychology, Rodehen Branch, Islamic Azad University, Rodehen, Islamic Azad University, Rodehen, Mohammad Reza Khodabakhsh محمدرضا خدابخش 100319475328460012469 100319475328460012469 Yes Department of Psychology, Neyshabur Branch, Islamic Azad University, Neyshabur, Islamic Azad University, Neyshabur