FREDAchek,
Despite the positive law differences in France, UK, USA and application of the rules, Civil Aviation trials and Lawyers defence are progressing toward similar decisions since big international teams of tenors of Barrell are now organized.
It is not so easy to qualify an accident in culprit negligence :Judges need to be sure that the act you qualify as a negligence is the direct cause of the accident.
We all felt micosleep once . If we have an accident it would be necessful to prove that a past microsleep (to identify by physology Searchers wo are still very ignorant) is the direct cause from the recent accident and we know it would not be the case.
You seem to say that industry would be free to put their workers at volounter risk of microsleep resulting from "excessive" fatigue accepted by mutual agreement.
Which Judge would take such decisions?