Labor groups have looked beyond NLRB elections in an attempt to gain a union foothold at Amazon. They've assisted employees with filing unfair labor practice charges with the NLRB against Amazon, accusing the company of violating labor laws.
The International Brotherhood of Teamsters helped coordinate a picket effort at nine Amazon facilities in December. Amazon said the walkout had no impact on its operations.
The Teamsters union has said it represents 9,000 Amazon workers around the country, although the company has refused to recognize the union and bargain with leadership.