Heating Company Illegally Banned Union Shirts, NLRB Judge Finds

A Tennessee heating and ventilation company violated federal labor law by telling workers they couldn’t wear union-related shirts on the job, a National Labor Relations Judge ruled.

NLRB Administrative Law Judge Charles Muhl ruled Tuesday that Flow Service Partners Op-Co LLC illegally demanded that two union organizers wear only company shirts while at work, after the two wore T-shirts saying “Union Organizer” in 2021.

Muhl found that the directive also amounted to a threat against the workers because a supervisor warned them they would be losing a “good thing” if they kept wearing the union shirts.

The ...