Labor Union Contracts

12 Months Ended

Dec. 31, 2015

Labor Union Contracts

Concentration Risk Disclosure

Labor Union Contracts

Approximately 37% of our employees are members of various bargaining units represented by the Communications Workers of America ("CWA") or the International Brotherhood of Electrical Workers ("IBEW"). As of December 31, 2015, approximately three hundred, or 2%, of our employees are subject to collective bargaining agreements that expired in 2015. We believe that relations with our employees continue to be generally good. We are currently negotiating the terms of new agreements covering these employees. Approximately one thousand, or 6%, of our employees are subject to collective bargaining agreements that expire in 2016.