The St. Lawrence Seaway is shut down as hundreds of workers walk off the job.

The Seaway's largest workers’ union — Unifor — began striking late Saturday night after after failing to reach an agreement on wages.

“This impasse is extremely unfortunate but our members remain committed to getting a fair agreement," Unifor National President Lana Payne said in a statement.

The St. Lawrence Seaway connects the Great Lakes and the St. Lawrence River.

“The Port of Oswego is not taking sides in the strike, but we’re critically affected by it,” William Scriber, CEO and executive director of The Port of Oswego Authority, said in a statement. “More than 100 local farmers are unable to bring their grain here for export, nor is Novelis able to be served by the port with waterborne shipments of raw aluminum. In addition, according to a recent U.S./Canadian research study, 2,229 jobs are at stake that are supported by the Port’s maritime activity, and the Port makes a $half-billion impact on the local and regional economy. This issue must become a top priority by both the U.S. and Canadian governments to resolve it quickly—especially as we near the end of our 2023 shipping season.  Everyday this strike continues It affects jobs here in Oswego, our customers, and our ability to engage in international trade.”