ACA Germany Hispanic Humanities Job Demands-Control-Social Support (JD-R) model Korean workplaces MTurk Millennials Perceived Occupational Health (POH) Social interaction Total Worker Health Total Worker Health® action learning adolescent barriers behavior change blood pressure breastfeeding burnout cardiovascular disease cognitive demands community-university partnership company reintegration management construction industry cross-sectional survey dirty work dissemination employee characteristics employee well-being employment duration