The National Nurses United union has filed a complaint with the NLRB alleging that Johns Hopkins Hospital management has been engaging in anti-union activity. The union claimed that management prohibited nurses from discussing unionization while at work, and prevented nurses from coming in to work on their days off to talk to their colleagues about unionization efforts. The NLRB agreed with the union that the hospital has been discouraging unionization in ways that directly violate federal labor law. While the hospital claims to disagree with the NLRB’s findings, the board intends to file a formal complaint if the hospital doesn’t decide to settle.
See "Federal labor board finds Johns Hopkins Hospital tried to deter nurses from forming union", Andrea K. McDaniels, The Baltimore Sun, October 31, 2018