Disneyland performers who wear character costumes like Mikey Mouse and Cinderella have voted to unionize.
Cast members voted 953-258 to back the move, the Actors Equity Association reported.
"They say that Disneyland is 'the place where dreams come true,' and for the Disney Cast Members who have worked to organize a union, their dream came true today," said Actors' Equity Association President Kate Shindle.
"These workers are on the front lines of the guest experience; they're the human beings who create lifelong memories when your kids hug a character, or when your family watches a parade roll by the castle," she added.
Organizers say they were fighting for "cast member safety, appropriate compensation, clear and respectful communication, fair scheduling and job security."
Some workers claimed they have suffered injuries from complex costumes and erratic schedules.
The Disneyland Resort includes Disneyland Park, Disney's California Adventure, three hotels and Downtown Disney.
The union already represents theatrical performers at Disney's Florida parks and with Disney Theatricals on Broadway and on national tours.
The National Labor Relations Board is expected to certify the results within a week.
