Amazon workers in Staten Island, New York on Friday won their election to form the retail giant's first-ever union in the United States, a landmark victory for the labor movement in the face of aggressive union-busting efforts from one of the world's most powerful companies.

"In my 25 years writing about labor, the unionization victory at the Amazon warehouse in Staten Island is by far the biggest, beating-the-odds David-versus-Goliath unionization win I've seen," said veteran reporter Steven Greenhouse as the historic vote was completed.