Workers at an Amazon.com Inc. warehouse in Alabama will get a third chance to vote on unionization after a federal labor board judge ruled the retailer illegally interfered with the rerun election.

A National Labor Relations Board administrative judge has ordered a third union election at an Amazon warehouse in Alabama, ruling that the company had again engaged in a series of illegal practices to thwart unionizing.

An Alabama administrative law judge ruled on Wednesday that workers at Amazon's fulfillment center in suburban Birmingham should vote for a third time to unionize.