Industrial Relations: Global campaign against Wal-Mart

Union Network International (UNI), is set to launch a global campaign against Wal-Mart.

Union leaders are hoping to win collective bargaining and other improvements for an estimated 1.6 million Wal-Mart employees around the world. Wal-Mart has long been accused of "union busting,"

UNI includes 900 unions in 140 countries.