Happens in all airlines. Just saw a report on tv the other day. It is also well known to all airlines that their pilots are overworked. It is not about an 8 hour shift, it is about having to do one flight after another with not enough time to rest in between.
Finally this is going public, it has been insider knowledge for years though.
Hopefully the airlines will get a grip now...most likely the result will be higher airfares.