Teamsters Look for UPS Wins to Carry Over to Amazon, Big Three (Correct)

Concessions that the International Brotherhood of Teamsters won from United Parcel Service Inc. promise to reshape the trucking business, even with the broader labor situation unsolved, and give organized labor a surer foothold at Amazon.com Inc. and other delivery firms that rely on contractors.

Before negotiations collapsed on July 5, UPS agreed to end a two-tier wage system that the union says short changes part-time drivers who also do warehouse work, as well as outfit its delivery trucks with air conditioning for the first time. Because of the way collective bargaining works, it’s unlikely that those agreements would be revisited, ...