http://www.turnto23.com/news/local-news/dozens-of-local-att-protest-over-suspended-co-worker
See how every time AT&T talks to the press they say the same thing about "the largest employer of full-time union labor in the U.S., and proud of our strong longstanding relationship with our unions."
That must be why they are laying off non-union people, but using a variety of anti-employee practices to get union employees to just quit.