1. Stress and the risk of illness;Adams,1976
2. Occupational burnout and medically certified sickness absence: a population-based study of Finnish employees;Ahola;Journal of Psychosomatic Research,2008
3. Arbeidsmiljødatabanken. (n.d.). Arbejdsmiljø og helbred 2012 [Work environment and health 2012] from http://data.arbejdsmiljoforskning.dk.
4. Arbeidsmiljøloven. (2007). Lov om arbeidsmiljø, arbeidstid og stillingsvern mv. (arbeidsmiljøloven). [Act relating to working environment, working hours and employment protection, etc. (working environment act)] § 15.
5. Life events or life processes as determinants of mental strain? A 5-year follow-up study;Aro;Social Science & Medicine,1984