Job stress, burnout and substance use among urban transit operators: The potential mediating role of coping behaviour

Urban transit operators, compared to other occupational groups, have higher rates of mortality and morbidity. A major risk factor is the highly stressful objective environment. This study used structural equation modelling to test a model hypothesizing that transit operators' coping behaviours in responding to daily job hassles mediate the associations of work stress with burnout and substance use. The study sample consisted of 1231 transit operators who participated in the San Francisco MUNI Health and Safety Study. The results showed a direct and strong association between transit operators' daily job stress and symptoms of occupational burnout even when a series of controls and coping behaviours were considered. In addition, use of disengage-deny and escapist strategies to cope with job stress was positively associated with burnout; the job stress-burnout association was partially mediated through such coping practices. Daily job stress was related to substance use only indirectly and mediated through burnout and use of disengage-deny and escapist coping strategies. Disengage-deny coping strategies might help reduce substance use whereas escapist coping strategies might increase such use. Overall, our findings suggest that coping behaviour may be an important correlate of transit operators' ill health. Interventions enabling healthy coping behaviours may help reduce health risks for this occupational group.