Carrier, which struck a deal with President Trump last year to keep jobs at its Indianapolis plant, is readying itself for a final round of layoffs at the facility.
More than 200 employees will lose their jobs in January, Fox News reported.
Robert James, the president of the union that represents plant workers, said employees "just don't have any faith in this plant staying in Indianapolis."
Trump — who has promised to revamp the manufacturing sector on the campaign trail and in the Oval Office — said he reached an agreement with the corporation last November to preserve about 1,000 jobs at the Indianapolis plant.
That deal came after Carrier said it would close its facility in Indianapolis and move operations to Mexico — eliminating 1,400 jobs.
"More than 1,100 jobs remain at the Indianapolis facility in keeping with our 2016 commitment," the company said in a statement on Thursday.
"We continue to actively engage with our workers and the community to provide impacted employees with resources to make a smooth transition, including education, training and an opportunity for employment across UTC’s manufacturing operations."
The date of the layoffs was initially planned for December, but was delayed to Jan. 11, the company said, adding that there are fewer workers leaving than originally planned because of attrition.
Earlier this year, the air conditioning company laid off 300 workers at the Indianapolis factory.
“This week, approximately 300 employees will leave Carrier as part of the previously announced plan to relocate fan coil manufacturing production lines,” Carrier said in a statement in July.
Vice President Pence was governor of Indiana from 2013 to 2017.
--This report was updated at 1:17 p.m.