That should come under work safety laws, especially for the type of job they do. Like the lady said - that sort of long term fatigue is worse than getting drunk above the legal limit. I have personal experience. Situational awareness and judgment gets progressively impaired. How is that even an acceptable risk on the railroad? An accident could potentially harm people who are not even connected to the railroad.

There are accident investigation report in the airline industry that found that fatigue and impaired alertness from even the maintenance staff is a threat to the safety of passengers. Any work that involves a risk of accident must include pre-shift alertness tests and mandatory minimum scores. Considering the sort of health risks involved, that should apply to all jobs - with a minimum number of paid leaves/year for recovery.

It should be of grave concern for the general public that huge MNCs are willing to put the lives of employees, customers and even general public at risk in pursuit of insane profits for the C-suite and investors. It's an even bigger concern that these MNCs are able to influence legal system to rubber stamp such insanity.