Microsoft’s First US Union Formed by ZeniMax Video Game Testers

A group of about 300 video game testers working for Microsoft Corp.’s ZeniMax Studios voted to form what will be the software giant’s first union and the largest in the video game industry.

Microsoft formally recognized the union, sticking to a labor neutrality pledge it made last summer, according to a statement from the Communications Workers of America, which represents the union. Microsoft said in June it would agree to recognize any group of workers who voted to organize, as it seeks to win regulatory support for its $69 billion purchase of Activision Blizzard Inc.

The labor ...