Not surprisingly, Harvard Business School research has shown that even shutting off the smartphone for 1 evening a week increases employees happiness. Dubbed "Predictable Time OFF", or PTO, employers who indoctrinate a "No Phone Zone" get more engaged and satisfied workers as a result! Set an example! As tempting as it may be, do not respond to or send out evening e-mails. Read more: http://www.emissourian.com/news/national/article_3ebe2258-71c5-11e1-a7e1-001871e3ce6c.html