The National Labor Relations Board (NLRB) has ruled that Amazon is a joint employer of subcontracted drivers in California, challenging Amazon's claim that these drivers are solely employed by third-party Delivery Service Partners (DSPs). This decision follows investigations into unfair labor practices filed by the Teamsters union, who argued that Amazon exercises significant control over the drivers, including setting routes, delivery targets, and monitoring performance. As a joint employer, Amazon would be required to negotiate with unions over working conditions, potentially paving the way for broader unionization efforts among its 275,000 subcontracted drivers. The NLRB also found that Amazon unlawfully threatened workers, held anti-union meetings, and refused to bargain with the union. Amazon has dismissed the ruling as meritless and plans to appeal. This landmark decision could have nationwide implications for Amazon's labor practices and unionization efforts.