Starbucks violated federal labor law when it increased wages and offered new perks and benefits only to non-union employees, a National Labor Relations Board judge found Thursday.

The decision is the latest in a series of NLRB rulings finding that Starbucks has violated labor law in its efforts to stop unions from forming in its coffee shops.

“The issue at the heart of this case is whether, under current Board law, [Starbucks] was entitled to explicitly reward employees,” for not participating in union activity, “while falsely telling its workers that the federal labor law forced it to take this action,” wrote administrative law judge Mara-Louise Anzalone. “It was not.”