text: highest quintile, a difference of 21% (EU27, 2019).196 The**European Quality of Life Survey**(EQLS) 
  finds that 13% of the lowest quartile report bad health (EU28, 2016), compared to only 4% of the 
  respondents of the highest income quartile. 197 
  
  The**relation between socioeconomic status — measured by income — and working conditions**
  is often not further analysed, at least not on an aggregated statistical level. Due to complex 
  methodological difficulties and strong national variations of the health systems, there are until now**no**
  **EU-wide morbidity statistics available, based on administrative data**.198 A ‘Morbidity Task Force’ 
  at EU level worked between 2005 and 2011 on the development of such statistics.199 Country-specific 
  data — without a harmonised approach between countries — are provided in EU and OECD publication 
  series.200 
  
  The system of**European Core Health Indicators (ECHI)**provides an overview on prevalence of major 
  diseases.201 Main morbidities covered until now are asthma, chronic obstructive pulmonary diseases 
  (COPD), communicable diseases, depression, dementia, diabetes, diseases caused by drugs, 
  HIV/AIDS, and physical or sensory functional limitations. However, in ECHI there is no option to relate 
  these diseases to sectors or occupations. 