They are 8 hours on, and 8 hours off. The on call call is also 90 minutes ahead of time. So more like 6.5 hours off.
Many end up sleeping in the parking lot.
There's an alarm that rings every minute on the train - a dead man's switch. Oftentimes this is the only thing keeping them awake.
To top it off, no sick leave.
And these people are overseeing fucking trains.
Congress backing these companies in any way is absolutely disgusting.