Longshoremen negotiators informed the press on Sunday that talks have stalled and that the October 1 strike is going to happen Tuesday. Retailers brace for what is expected to be massive shortages affecting multiple industries.

Business owners like Chris Butler are growing very concerned. Butler is the CEO of the National Tree Company, and, like many businesses, his is counting on shipments that are en route from Asia but won't reach their ports before an expected strike by longshoremen starting at 12:01 a.m. Eastern time Tuesday.

The company, based in New Jersey, is an importer of artificial Christmas trees and other holiday decorations. If a strike were to last just a few days, there might be time afterward to unload the trees, transport them to warehouses and have them ready for customers this season.

Yet if a strike were to keep ports closed until, say, November, about 150,000 trees might not arrive in time for the peak shopping season, imposing costs on National Tree and other businesses. In a worst-case scenario, those costs, multiplied across industries, could fuel inflation and pressure the U.S. economy.

"Definitely not an ideal situation," Butler said.

National Tree already has stockpiled or delivered most of the roughly 2 million artificial trees it sells each year. But it would lose revenue if 150,000 of the trees got stuck in the pipeline.

Other businesses face the same predicament, with goods that could be stranded at sea if 45,000 members of the International Longshoremen's Association make good on their threat to strike. They could shut down 36 ports from Maine to Texas that handle about half the goods shipped into and out of the United States. West Coast dockworkers belong to a different union and aren't involved in the strike.

A prolonged strike would force companies to pay shippers for the delays, and goods could arrive too late for the high point of the holiday shopping season.