Activists must get at least 30 percent of workers to sign union cards and force a vote overseen by the National Labor Relations Board. Companies often do all they can to dissuade workers from joining, hiring lawyers and consultants who specialize in defeating union campaigns. The company reported profit of $2.7 billion on sales of $25 billion in the second quarter, giving it a profit margin of about 11 percent. That profit margin is more than that of Ford or G.M., even after an exceptionally profitable period for those companies. In August, United Parcel Service employees won their biggest raises ever in a contract negotiated by the International Brotherhood of Teamsters.

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Persons: Tesla, Biden Organizations: National Labor Relations Board, Companies, Amazon, Ford, Fiat Chrysler, Peugeot SA, Hollywood, United Parcel Service, International Brotherhood of Teamsters Locations: Staten, unionize, United States