Statement from AT&T Chairman & CEO Randall Stephenson:
"On behalf of everyone at AT&T, our thoughts and prayers go out to the Rosen family during this difficult time.
"Seth was an outstanding leader and possessed a passion for the labor movement and his members. He was a great thinker and innovator. He was tough and relentless, but he showed us all the importance of working together.
"Seth was a great man, a good friend, and we'll miss him."