Alphabet and Google are once again in hot water, with the workers’ union claiming Google and a contractor forbid talking about pay.

Federal law prohibits companies from interfering with workers discussing pay. In spite of that, according to The Mercury News, the Alphabet Workers Union (AWU) is accusing Google and a Google contractor of forbidding workers from discussing their wages.

In its first complaint with the National Labor Relations Board, the newly-formed AWU says Google and Adecco Group had a “rule that precludes employees from discussing wages with one another,” at a South Carolina data center. One worker was even suspended in retaliation, after a supervisor noticed the worker’s social media post expressing support for the AWU.

“The same supervisor previously sent an electronic message directing Wait not to discuss wages with her co-workers when she began asking questions about why some workers did not receive a promised bonus,” read the AWU’s news release.

Alphabet and Google continue to have issues with employee relations, from fallout over firing Dr. Timnit to this latest incident. The companies clearly have a ways to go in their efforts to rebuild employee trust.