text: Generally, academic literature groups the main**determinants of life expectancy**into three main 
  categories:**resources of the healthcare system, factors related to lifestyle, and socioeconomic**
  **factors**.193**Working conditions are in general regarded as part of the socioeconomic status.**
  
  *‘A number of studies have turned to examining within-country health inequalities in order to understand*
  *population health. One of the first notable studies was the Black Report (Black 1982), which exposed*
  *staggering differences in health across socio-demographic groups in Britain. Since then, it has been*
  *shown that systematic and persistent health inequalities exist worldwide, whereby individuals with lower*
  *income, education, and occupational status tend to enjoy considerably worse health.’*194 
  
  Due to the difficulty to receive harmonised morbidity and health data from administrative sources of the 
  national health systems,**European quantitative overviews often rely on surveys**that ask for self- 
  reported health data (Eurostat: Survey on Income and Living Conditions SILC, Eurofound: European 
  Quality of Life Survey EQLS, etc.195). 
  
  The**EU Statistics on Income and Living Conditions (EU-SILC)**corroborate the impact of the 
  socioeconomic status for an unequal health status, life expectancy or expected healthy life years. 
  **People with lower income are less likely to report being in good health**: 59% of EU citizens in the 
  lowest income quintile (the lowest 20%) report being in good health compared to 80% of those in the 