Data point. In New York State there is a law stating that residents cannot be made to work over 70 hours a week, or over 36 hour shifts.

I have heard that not a single hospital in the state is actually in compliance.

Data point. In confidential surveys over half of US doctors can think of someone that they believe they killed due to an error made through sheer exhaustion.

The first world may be better off, but that doesn't mean that it is in great shape...