Registered nurses at Ascension Saint Agnes Hospital in Baltimore voted late last week to join National Nurses United.

This marks the first time nurses in Baltimore have unionized at a private hospital, the union said Saturday.

“This victory is a big win for our patients and for all of Baltimore, and we achieved it despite the Ascension administration’s relentless efforts to undermine our legal rights to form a union, which are currently under federal investigation,” Kimmy Rider, a nurse at Saint Agnes, said in a statement.

Earlier this fall, National Nurses United filed an unfair labor practice against the hospital, alleging management was making threats and unlawfully stifling the union campaign. Nurses at the hospital originally filed for union representation over the summer. When the complaint was filed, a representative for Ascension Saint Agnes said it was acting in accordance with the law. A representative for National Nurses United said the case is still being investigated.

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In an emailed statement, Justin Blome, a spokesman for the hospital, said 223 out of 522 eligible nurses voted in favor of the union and said the hospital would honor the certified outcome of the union vote. The statement did not say how many nurses took part in the election, however.

“[W]e are committed to working together with all of our associates as we continue to focus on what is most important — caring for our patients — and look forward to coming together around this common goal,” Blome wrote.

Earlier this fall, National Nurses United filed an unfair labor practice against the hospital, alleging management was making threats and unlawfully stifling the union campaign. Nurses at the hospital originally filed for union representation over the summer. When the complaint was filed, a representative for Ascension Saint Agnes said it was acting in accordance with the law. A representative for National Nurses United said the case is still being investigated.

This marks the first time nurses in Baltimore have unionized at a private hospital, the union said Saturday.

“This victory is a big win for our patients and for all of Baltimore, and we achieved it despite the Ascension administration’s relentless efforts to undermine our legal rights to form a union, which are currently under federal investigation,” Kimmy Rider, a nurse at Saint Agnes, said in a statement.

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Earlier this fall, National Nurses United filed an unfair labor practice against the hospital, alleging management was making threats and unlawfully stifling the union campaign. Nurses at the hospital originally filed for union representation over the summer. When the complaint was filed, a representative for Ascension Saint Agnes said it was acting in accordance with the law. A representative for National Nurses United said the case is still being investigated.

This marks the first time nurses in Baltimore have unionized at a private hospital, the union said Saturday.

“This victory is a big win for our patients and for all of Baltimore, and we achieved it despite the Ascension administration’s relentless efforts to undermine our legal rights to form a union, which are currently under federal investigation,” Kimmy Rider, a nurse at Saint Agnes, said in a statement.

Earlier this fall, National Nurses United filed an unfair labor practice against the hospital, alleging management was making threats and unlawfully stifling the union campaign. Nurses at the hospital originally filed for union representation over the summer. When the complaint was filed, a representative for Ascension Saint Agnes said it was acting in accordance with the law. A representative for National Nurses United said the case is still being investigated.

This marks the first time nurses in Baltimore have unionized at a private hospital, the union said Saturday.

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“This victory is a big win for our patients and for all of Baltimore, and we achieved it despite the Ascension administration’s relentless efforts to undermine our legal rights to form a union, which are currently under federal investigation,” Kimmy Rider, a nurse at Saint Agnes, said in a statement.This marks the first time nurses in Baltimore have unionized at a private hospital, the union said Saturday.

“This victory is a big win for our patients and for all of Baltimore, and we achieved it despite the Ascension administration’s relentless efforts to undermine our legal rights to form a union, which are currently under federal investigation,” Kimmy Rider, a nurse at Saint Agnes, said in a statement.