About 45,000 dockworkers along the U.S. East and Gulf Coasts are threatening to strike on Oct. 1, a move that would shut down ports that handle about half the nation’s cargo from ships.

Dockworkers and the governor in South Carolina, the state with the lowest percentage of unionized workers, are digging in their heels over a labor dispute.

The arrival of robots at the Port of Los Angeles is exposing a stark economic divide between two sets of Southern California workers.

Members of the U.S. Maritime Alliance said they have ratified a new six-year contract with the International Longshoremen’s Association, the largest union of maritime workers in North America.

More than 18 months after the International Longshoremen's Association seized control of its largest Baltimore local, the union is poised to end its strict oversight of Local 333 after the local elected new leaders last week.