UPS said on Tuesday that it would cut 20,000 jobs this year as part of a long-term plan to reduce costs and bolster profit.

The cuts come as President Trump’s tariffs are prompting some UPS customers to ship fewer goods. The company said “macroeconomic uncertainty” prevented it from updating its forecasts for revenue and profits for 2025.

UPS already cut 12,000 jobs last year. It now has some 490,000 employees, many of whom are members of the Teamsters union. In its latest cuts, the company said it would shed “operational” employees, or those who sort or deliver packages. UPS also said it would close 73 buildings by the end of June.

UPS has been trying to improve its profit margins, partly by reducing costs and shedding parts of its business that don’t make money. The company has said many of the deliveries it does for Amazon, its largest customer, are not profitable. It plans to slash in half the volume of packages it delivers for Amazon by the middle of next year.

In all, UPS plans to reduce costs by $3.5 billion this year. Most of that sum is expected to come from the job cuts and building closures, but the company also anticipates savings from reducing the number of hours its employees work. UPS has 412,000 hourly employees, about half of whom are part time.

In 2023, the Teamsters and UPS agreed to a five-year labor contract that included wages that were significantly higher than at nonunion delivery companies. Commenting on the job cuts Tuesday, the Teamsters’ general president, Sean M. O’Brien, said the contract requires UPS to create 30,000 Teamster jobs.

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