Elkin Carcano, 30, of Trenton was taken to St. Joseph's Regional Medical Center in Paterson in serious condition following the late-morning collapse at the Elmwood Village Apartments on Mola Boulevard, Police Chief Michael Foligno said.
Co-worker Luis Martinez, 24, no address immediately available, was also taken to St. Joe's with less serious injuries, Foligno said.
Borough police, firefighters and Little Falls Ambulance members were among the responders.
A building inspector was summoned and OSHA was notified.
The Elmwood Village Apartments are a collection of one-, two-, and three-bedroom rental units and townhomes.
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