NEW YORK — One of the nation's largest union is aiming to unionize Amazon workers.

Representatives from the International Brotherhood of Teamsters, a union that represents 1.4 million workers, voted on Thursday to make organizing Amazon workers a priority. That means it will create a division focused on Amazon and set aside money for the effort.

The Teamsters said that Amazon, the nation's second-largest private employer, is exploiting its employees by paying them low wages, pushing them to work at fast speeds and giving them no job security. It also said the company, which has been rapidly growing its delivery business, threatens the working standards it has created for workers at other freight and delivery companies, such as UPS.

So far, no effort to unionize Amazon has been successful in the company's 26-year history, including a recent one at an Alabama warehouse where workers overwhelmingly voted against joining a union.