Editors have highlighted the following attributes while ensuring the content's credibility:Credit: Unsplash/CC0 Public DomainAmazon.com Inc. exercised "overwhelming control" over subcontracted drivers it claimed weren't its employees, U.S. labor board attorneys told a judge Monday. The Teamsters have mounted organizing campaigns among several groups of contract drivers, part of a larger, hard-fought effort to unionize Amazon's operations. Under President Joe Biden, labor board prosecutors deemed Amazon a "joint employer" of the Palmdale workers. Contract delivery firms are required to adhere to Amazon's rules, which the company can unilaterally change at its discretion. Rulings by agency judges can be appealed to the labor board members in Washington, DC, where Republicans may soon hold a majority if Trump's nominees are confirmed—and from there to federal court.