The Occupational Safety and Health Administration also opened a broader investigation into Amazon warehouse working conditions, according to the company.
The cause of death for the New Jersey worker, who wasn't identified, hasn't been released. He reportedly died July 12, the first of two days when Prime Day deals were officially offered.
"We're deeply saddened by the passing of one of our colleagues and offer our condolences to his family and friends during this difficult time," Amazon spokesperson Sam Stephenson said. HuffPost reported the death on Monday. An OSHA spokesperson said the agency is aware of the death and has opened an investigation.
The broader OSHA investigation is into warehouses in the New York City; Chicago; and Orlando, Florida, areas. The agency is looking at allegations of unsafe working conditions tied to "Amazon's required pace of work for its warehouse employees," according to a statement given to ABC News, which reported the investigations earlier.
"OSHA received referrals from the United States Attorney for the Southern District of New York regarding allegations of safety and health violations at several Amazon facilities," an OSHA spokesperson said, who added that such referrals are routine.
Amazon spokesperson Kelly Nantel said the company will cooperate with the investigation, adding "we believe it will ultimately show that these concerns are unfounded."
The investigations come as Amazon faces increasing scrutiny for high injury rates. Regulators have tied the rates directly to the company's demanding pace of work, which Amazon enforces with surveillance of workers' movements throughout their shifts. Worker advocacy groups have foundat Amazon warehouses than at non-Amazon warehouses, based on Amazon's reports to OSHA. Amazon has said it prioritizes worker safety with new training programs and other investments.
Workers have told CNET that they'vein getting care and benefits after injuries at warehouses. Amazon said the workers' experiences weren't typical for its workforce.