The Communications Workers of America union gave the company 72-hours notice Friday of a possible walk out.

CWA members have been working on an rolling extension of their previous labor contract since early February. The notice of a possible strike comes the same day as AT&T's shareholder meeting in Dallas.

"We have given AT&T every opportunity to show their commitment to finding common ground and a fair contract," said Dennis Trainor, vice president of CWA District 1. "Time is running out for AT&T to stop undermining good jobs, quality customer service and its long-term success. The pieces are all in place now, and we'll strike if necessary."
21,000 AT&T Wireless workers could strike Monday - Apr. 28, 2017