More than 100 Seattle Art Museum employees announced plans this week to unionize, joining the nationwide labor movement that’s swept through art institutions in the last six years. The union, called the Seattle Art Museum Workers United, will represent workers in over 20 front- and back-end departments. The union told SAM director and CEO Scott Stulen of its formation in a letter, writing: “Our solidarity is a movement to improve working conditions in alignment with SAM’s mission, vision, and core values.” The letter continues, “The challenges we face as unsustainable wages, subpar health benefits, and siloed, top-down decision-making, are undeniable, systemic, and have persisted across administrations.” The Seattle Art Museum did not respond to an ARTnews request for comment. Details of the bargaining unit will be finalized over the coming months. Union organizers said they have a supermajority of support among eligible workers, including...