Ports on both sides of the Delaware River support thousands of jobs and move vast amounts of cargo through the South Jersey-Philadelphia area. However, the International Longshoremen’s Association — representing about 25,000 port workers on the East and Gulf coasts —– might strike when a contract expires at midnight Monday, Sept. 30.

The largest union representing dockworkers in the United States said an anticipated port strike will begin on Tuesday, as negotiations have reportedly stalled.