A group of Google engineers announced Monday that they are forming a union, a very rare step in the technology industry.

More than 200 employees at Google and Alphabet formed the Alphabet Workers Union, which will be affiliated with the Communication Workers of America union. The newly formed union will be the first open to all Alphabet employees, regardless of their role or classification.

“This is historic—the first union at a major tech company by and for all tech workers,” said Dylan Baker, Software Engineer. “We will elect representatives, we will make decisions democratically, we will pay dues, and we will hire skilled organizers to ensure all workers at Google know they can work with us if they actually want to see their company reflect their values.”

“Our union strives to protect Alphabet workers, our global society, and our world,” the Alphabet Workers Union said. “We will ensure Alphabet acts ethically and in the best interests of society and the environment.”

Last month the National Labor Relations Board charged Google with violating the National Labor Relations Act by unlawfully surveilling, interrogating and firing activist employees.

Earlier this year, employees at Kickstarter voted to become the first white-collar tech union.