UPS recently ended a contract with the United States Postal Service and delivery changes are coming to some post office box users as a result.

U.S. Postal Service (USPS) workers will no longer deliver UPS SurePost packages after the government agency's contract with the parcel service expired this year. The International Brotherhood of Teamsters, a union representing UPS delivery drivers, confirmed the negotiated service agreement's expiration in a Facebook post last week.

In the past, the final leg of these deliveries was made by the U.S. Postal Service; now, they will be handled by UPS after the Jan. 1 contract expiration. “Millions of packages moved away from SurePost and the United States Postal Service and returned to UPS package cars this month,

UPS ends its SurePost agreement with USPS, shifting package deliveries back to UPS drivers and changing delivery processes.