First reported by The Verge, 600 Activision QA workers have formed a new union at the publisher. It was organized through the Communications Workers of America (CWA), like other unions at the company, and this new union is now the largest in the American gaming industry, surpassing the 300-person Zenimax Workers United, a fellow CWA union at another Microsoft subsidiary.
https://sg.news.yahoo.com/600-activision-qa-workers-just-180039406.html