Survey: One-third of workers catching zzz's on job

• Story Highlights
• Survey suggest workers not getting enough sleep
  
• People go to bed, on average, at 10:53 p.m., get up at 5:35 a.m.
  
• Workers get six hours, 40 minutes of sleep on average
  
• Longer workdays contribute to lack of sleep, survey says
  
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