Work functioning (WF) refers to the ability of a person to meet all work demands (i.e. work scheduling, output, physical, mental-interpersonal demands) for a given state of health (Amick and Gimeno, 2008). Given the increasing prevalence of overweight and obesity in the aging working population, overweight and obesity could influence the ability to meet these work demands. Previous studies suggested that obesity is associated with impaired physical, psychosocial and cognitive functioning (Pagoto et al., 2006).