Iirc in the 70s a dc8 or 707 freighter overflew it’s west coast destination and were fortunately woken up by repeated selcal transmissions whilst they still had enough fuel after doing a 180 and getting to an airfield.
Fallen asleep in descent during my annual route check on the last sector back to Europe from the east coast and witnessed a few other colleagues accidentally falling asleep including a management pilot who had just given out about a fellow copilot doing same. FE and I commented and a few months later procédures were changed.
In both my first and last company management fiddled schedules so that we « accidentally » exceeded agreed flight time limitations. The first using airport standby for what was a scheduled operation to Nicosia and back at night; the other were Atlanta during winter where we regularly arrived an hour late west bound and another after the Alaskan volcano went bang and we routed Tokyo - Bombay - Zurich without a heavy crew..again with a management pilot.
Had à mate who managed to miss calling the Swiss when passing over the country…but not through sleeping.