Tehran University of Medical Sciences International Journal of Occupational Hygiene 2008-5109 8 4 2017 04 08 230 236 EN AKRAM SADAT ROODBANDI MS in occupational health engineering, occupational health department, health school, Bam University of Medical Sciences, Bam, Iran. VAFA FEYZI MS in occupational health engineering, a member of student research committee health department, Kerman University of Medical Sciences, Kerman, Iran NARGES KHANJANI Associate Professor, Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran SOMAYEH RAHIMI MOGHADAM MSc, Department of Occupational Health, Neyshabur University of Medical Sciences, Neyshabur, Iran. MAHDIYEH SHAFIEZADEH BAFGHI MS in occupational health engineering, occupational health department, health school, Yaz Shahid Sadoughi University of Medical Sciences, Yaz, Iran. MOJTABA MOGHADASI MS in HSE engineering, Department of the Environment, Tehran Islamic Azad University West Branch, Tehran, Iran. ZOHRE NOROUZI BS in occupational health engineering, a member of student research committee health department, Kerman University of Medical Sciences, Kerman, Iran. 2017 01 22 2017 04 08 Shift work is an important factor influencing the sleep quality and sleepiness of nurses. The aim of the present research was to compare sleep quality in three groups: 1) nurses with shift work SN), 2) nurses without shift work (DN) as a control group for evaluating the effects of shift work, 3) regular non-shift employees (DE) who were not nurses, as a control group for the nursing job; to evaluate the effect of shift work and the nursing job in regard to sleep quality. The present cross-sectional study was carried out in 2013. The research participants were 326 nurses without shift work and with shift work and employees from one of Kerman University of Medical Sciences’ hospitals, Kerman, Iran. Data were gathered via the Pittsburgh Sleep Quality Questionnaire and the Epworth Sleepiness Questionnaire. Data were analyzed by SPSS 18. Overall, 91.2% of nurses (SN & DN) and 79.6% of employees (DE) had poor sleep quality. The sleep quality (P=0.013) and sleepiness (P=0.005) of all hospital nurses were significantly different from that of the university employees. However, there was not a significant difference between the nurses without and with shift work in terms of sleep quality (P=0.87) and sleepiness (P=0.41). Almost all nurses and most university employees suffer from poor sleep quality. Daily average sleep hours and shift work are among the influencing factors causing sleepiness and poor sleep quality. https://ijoh.tums.ac.ir/index.php/ijoh/article/view/243 https://ijoh.tums.ac.ir/index.php/ijoh/article/download/243/324