Hartmarx Corp. was forced into bankruptcy protection last year after lenders cut it off. Its creditors had pushed for liquidation, but state officials and workers had threatened a sit-in.
The company was sold in June to Britain-based Emerisque Brands and SKNL North America BV.
On Wednesday, workers ate picnic-style lunches on the lawn at the factory in Des Plaines.
"This is really a celebration of an entire team of people," said CEO Doug Williams, according to the Daily Herald. "This is the first step of many and we've got to be sharp everyday."
State Treasurer and Democratic senate candidate Alexi Giannoulias was one of the leaders who leaned on Wells Fargo last year.
"We fought hard to keep Hartmarx open. We fought hard to keep other companies open," he said Wednesday, according to ABC 7 Chicago. "I'm hopeful and optimistic we can go back to the Quad Cities, and hopefully in a few months and a few years, maybe get that place going again."
Hartmarx made a tuxedo, topcoat and suit for Obama's inauguration. It also made the suit Obama wore election night.