Introduction: Obesity is a known risk factor for type2 DM, hypertension, fatty liver, cardiovascular disease and cancer. Long work hours and short sleep duration might lead to obesity in migrant workers. Objective/Aim: Study was done to show the effects of work hours and sleep hours on the nutritional status of Pakistani laborers working in KSA. Method: It was a cross-sectional study. Pakistani male, 25-60 years old, unskilled and semi-skilled workers were included. Sociodemographic profile, length of work hours, and sleep hours were recorded. Anthropometric measures included BMI, waist circumference (WC), waist-to-hip ratio (WHR), waist-to-height ratio (WHtR), and conicity index (CI). Results: About 80% of participants were 48 hours/week, and half of the participants slept for __ampersandsignlt;7 hours/day. BMI, WHtR, and CI were higher than normal in the older group only, but WC and WHR were higher than normal in both groups.WHR and CI were significantly and negatively correlated with sleep hours categories. Binary regression analysis could not show effect of work and sleep hours on any of the anthropometric measures. Conclusion: Long work hours were not associated with obesity, however, fewer sleep hours were associated with obesity.