text: *one causal agent and relatively easy to identify. On the other hand, there are all sorts of disorders*
  *without strong or specific connections to occupation and with numerous possible causal agents.’*176 
  
  Some professions and regular work tasks had and have very specific risks, for example, hearing 
  disability through high noise levels, or musculoskeletal diseases caused by permanent repetition of a 
  certain movement or posture, or specific cancers after exposure to carcinogenic chemical substances, 
  infections in healthcare or work in laboratories, or allergies to natural substances in agriculture. Some 
  examples are: 