Ryan could not stay awake at work – and was unable to remember and keep track of key parts of his job. When questioned, he told his boss that he had sleep apnea, a sleep disorder that causes a person to stop breathing during sleep. His report from his doctor said that it was possible Ryan did have sleep apnea, but there was no definitive diagnosis because Ryan refused to take the necessary tests. The report also said that Ryan’s sleepiness could be caused by bad habits, like irregular sleep times, a poor diet, and heavy caffeine consumption. What legal obligations does his employer have to Ryan? Can Ryan be fired?