Nurses at Confluence Health Hospital Mares Campus in Wenatchee are unionizing.
The Washington State Nurses Association announced Thursday that the National Labor Relations Board certified the union vote this week.
The Nurses Association will now represent about 100 registered nurses at the hospital.
The union says nurses started to organize over a five month period at a time when they were frustrated over the hospital's handling of matters such as wages, traveling schedules and changes in management.