(See my other comment in this thread.) People with undiagnosed sleep apnea are prone to falling asleep at the drop of a hat and enter a state called microsleep

(See my other comment in this thread.) People with undiagnosed sleep apnea are prone to falling asleep at the drop of a hat and enter a state called microsleep[1]. People who fall into microsleep often don't even notice that they've fallen asleep, and can snore during these episodes. Since healthcare in America is often tied to employment, many employers will require someone with this sort of condition to get treated for it as a condition of continued employment. This results in your employer wanting to know that you're complaint or if you're likely to fall asleep on the job. [1] https://en.wikipedia.org/wiki/Microsleep https://en.wikipedia.org/wiki/Microsleep