The Seattle Art Museum officially has a large-scale union.

A large majority of workers, 94%, voted Wednesday to form the Seattle Art Museum Workers United. The vote was conducted by the National Labor Relations Board and included employees from all SAM locations: downtown, the Seattle Asian Art Museum and the Olympic Sculpture Park.

More than 100 Seattle Art Museum employees working across over 20 front- and back-end departments, including marketing, operations, visitor experience, curatorial, education, development and other departments, announced their intent to unionize last month. It was the latest effort in a movement of labor organizing at museums and fine art institutions around the country that has grown over the last six years.