Zhu Y, Liu J, Jiang H, et al. - In order to ascertain the relationship between long working hours and body weight outcomes, researchers conducted a meta-analysis. Searching PubMed and Embase databases from their inception to June 2019, they included 29 articles involving 374,863 participants in this work. Long working hours had the pooled OR of 1.13 on weight-related outcomes. Subgroup analysis stratified by definition of outcomes revealed the pooled ORs of long working hours on “weight gain/BMI increase,” “BMI ≥ 25 kg/m²,” and “BMI ≥ 30 kg/m²” of 1.19 (95% CI, 1.02-1.40), 1.07 (95% CI, 1.00-1.14), and 1.23 (95% CI, 1.09-1.39), respectively. Evidence suggests the association of long working hours with adverse weight-related outcomes. This emphasizes the necessity for establishing preventative interventions such as improved flexibility and healthy working schedules for employees.