Loneliness exerts a cost, the same as any business expense. In an article for Fortune, Claire Zillman addresses the ways loneliness is costing businesses. For starters, a 2006 survey found that nearly half of people in the U.S. felt “intensely lonely in their public lives.” A study from 2011 indicated that more workplace loneliness equated to “poorer task, team role, and relational performance.” Combine those two stats, and you can see the potential scope of the problem.
Additionally, lonely workers do not make an emotional connection with the business, making them more difficult to retain. Essentially, lonely workers become zombie workers, completing work but not with the ideal levels of enthusiasm or very likely efficiency. Clearly, businesses must consider employee engagement more seriously.
In the meantime, you can view the full article, which especially focuses on education, here: http://fortune.com/2014/07/29/worker-loneliness/