Abstract: ObjectiveTo investigate the sleep status and associated factors among employed floating population aged 18-59 years in Guangdong Province.MethodsStratified multi-stage cluster sampling method was used to select employed floating population aged 18-59 years in Guangdong Province in 2012. Face-to-face questionnaire survey was conducted to collect demographic characteristics (such as age, gender, occupation, level of education), sociological features (such as smoking, drinking, work style, stress, life satisfaction), and sleep status of the participants. Factors influencing the sleep status were identified using univariate and multivariate logistic regression analyses.ResultsA total of 4 131 valid samples were recovered, including 2 275 males (55.1%) and 1 856 females (44.9%). Most participants were aged 18 to 29 years, accounting for 39.3% (1 624/4 131) of the total. The average sleep time of the participants was (7.7±1.1) hours and 16.4% of them had sleep deficiency. Multivariate logistic regression analysis showed that the age (OR=1.446), smoking (OR=1.472), living or working stress (OR=1.323) were risk factors for sleep insufficiency, while good health status (OR=0.696) and social satisfaction (OR=0.758) were protective factors for the employed floating population in Guangdong Province in 2012.ConclusionThe sleep time of the employed floating population aged 18-59 years in Guangdong Province in 2012 was less. Age, smoking, living or working stress, health status and social satisfaction were influencing factors for sleep deficiency.