I have taken a snippet from the article written by Robyn Short, robynshort.com

Thank you Robyn Short for this eye-opening statistics and causes. And most importantly, there's hope and Solutions. 

http://robynshort.com/2016/02/16/the-cost-of-conflict-in-the-workplace/

"The inability for managers to effectively manage conflict and bring about positive resolution is costing them nearly one full day of productivity per month — two and a half weeks per year. It is not surprising that almost all employees recognize the critical need for conflict management skills in the workplace. In fact, the study found that 70 percent believe managing conflict is a critically important leadership skill. And 54 percent of employees believe managers could handle disputes more effectively by addressing underlying tensions immediately when they surface.

And yet, conflict does not have to bring about negative results. When managed effectively, conflict can stimulate progress, deepen trust and strengthen relationships — all of which enhances productivity and optimizes bottom line results.

Around the world, conflict resolution skills are rarely taught as core curriculum in education, which means most adults enter the workplace with little to no knowledge of how to prevent and/or manage conflict."