U.S. based Norwegian flight attendants are joining the Association of Flight Attendants CWA.

The executive board of the Norwegian Cabin Crew Association had agreed to join AFA-CWA pending a vote by their membership. AFA-CWA says 59 percent of the U.S. based Norwegian flight attendants voting supported joining the AFA-CWA.

The union says the vote overcame what it described as "an intense campaign of management interference and union-busting during the vote."

The battle to organize the Norwegian flight attendants took two years. That's partly because Norwegian tried to allege that it wasn't the flight attendants' employer. But the National Mediation Board rejected that argument.