NEW YORK, Reuters – Activision Blizzard Inc. (NASDAQ:), recognized Communications Workers of America on Friday and initiated negotiations for a small number of Quality Assurance testers from the Call of Duty videogame manufacturer. They voted last month to unite.

Employees at technology companies have begun to speak out about working conditions and better wages. Over 200 workers from Google parent Alphabet Inc created a labor union last year for U.S. offices and Canadian ones.

According to Chief Executive Bobby Kotick, “While labor contracts are not always easy to negotiate,” he sent a letter to U.S. Activision employees.

Officials from the U.S. National Labor Relation Board, (NLRB) found that 19 of 21 quality assurance employees at Raven Software in Middleton, Wisconsin voted in favor to join the CWA.

Wisconsin is a state that guarantees right to work. This means any worker in Wisconsin can decide not to join a union.

CWA announced that Activision workers’ votes will not need to be recertified by CWA if Microsoft Corp In January, NASDAQ announced that it had acquired the company for $69 billion.

Initialy, the videogame manufacturer urged the NLRB not to grant a petition for a union election. Citing a recent reorganization of the company, he argued that any vote regarding unionization should take place among a larger number of employees.

Jennifer Hadsall, a regional NLRB director in Minneapolis, ruled that the proposed unit should stand, finding that the testers the CWA sought to represent had a “meaningfully distinct collective-bargaining interest.”

Recent years have seen the CWA focus more on non-union organizing in the technology and videogame industries.