Kraft Heinz, dually headquartered in Pittsburgh and Chicago, is set to close its Lehigh Valley, Pennsylvania plant after 40 years of operation.

Kraft Heinz Co. spokesman Michael Mullen said the company will vacate the plant at 7352 Industrial Blvd. in Upper Macungie by Nov. 18, the Allentown Morning Call reported.

Mullen said Kraft’s factory workers know about the plant’s eminent closure, but declined to say how many workers would remain at the plant until then.

“We remain committed to making this transition as seamless as possible, and thank our employees for their hard work and commitment to the facility,” Mullen said.

Kraft Heinz announced it would close the Upper Macungie plant and six others in the United States and Canada over the next 12 to 24 months almost exactly a year ago as part of a restructuring plan to cut 2,600 jobs.

The company employed 415 workers at its 907,610-square-foot plant in Upper Macungie at the time when the announcement was made.

The plant most recently made Grey Poupon mustard, A.1. Steak Sauce and on-demand coffee products for Tassimo.

Tassimo’s production is being shifted to Canada to be closer to its primary customer base.

The production of Grey Poupon will be moved to an existing plant in Michigan, which is expected to receive $17.2 million in investment and create 50 more jobs.

Kraft Heinz did not say where the production of A.1. Steak Sauce will shift.