[Work, age, health, and work participation. A theoretical model].

Research into the associations between work, age, and health and the impact of these associations on employment status has focused on health as a crucial determinant of staying on the job. In our paper, we ask whether concentrating on health is still feasible, particularly when considering the change in demographics and the increasing proportion of older people in the workplace. We introduce a theoretical model describing health as a variable that indirectly influences leaving employment. According to our model, the immediate decision to leave employment is due to work motivation and work ability. These two factors may require intervention activities different from those needed to improve health. Our model explains employment participation as a result of complex associations between work, socioeconomic status, lifestyle, and health especially with work ability and work motivation. The complexity of these processes should be considered in studies by conducting longitudinal investigations like the German lidA study (http://www.lida-studie.de). If the model is verified in scientific studies like lidA, it can be used as a basis for preventive and intervening activities in practice, i.e., in politics, enterprises, and science.