Macro level Organisational level Individual level
•  climate•  the nature of the industry•  age
•  epidemics•  working conditions•  sex
•  provision of health care services•  job demands•  occupational status
•  social insurance systems•  size of the enterprise•  job satisfaction
•  sickness certification practices•  characteristics of the workforce•  length of service
•  taxation•  workforce availability •  personality
•  pensionable age•  industrial relations•  life crises
•  social attitudes•  supervisory quality •  family responsibilities
•  economic climate•  personnel policies•  social support
•  availability of alternative employment•  labour turnover•  leisure activities
•  unemployment•  the provision of occupational health services•  alcohol intake
•  the health status of the individual