Amazon Warehouse Kentucky Getty Images
An warehouse in Kentucky. Getty Images

Johnson & Johnson (NYSE:JNJ) has a bone to pick with Amazon (NASDAQ:AMZN). The home-products maker raised concerns that independent merchants operating on Amazon’s network have been selling expired goods, according to a report by the Wall Street Journal.

A disagreement between the two companies prompted J&J to stop selling some of its products -- including Tylenol, Band-Aids and Johnson’s baby products -- through the site, although J&J recently resumed sales of most of its products through Amazon.

The U.S. Postal Service announced it will deliver Amazon packages on Sundays in the L.A. and New York metropolitan areas at no extra charge beginning this week, with plans to expand the program to other cities next year, the L.A. Times reports.

The deal with Amazon could be a huge boon for the postal service, which has been struggling with mounting financial losses. Its two largest rivals, United Parcel Service Inc. (NYSE:UPS) and FedEx (NYSE:FDX), do not offer regular Sunday delivery (FedEx offers limited delivery options on Sunday, however).