BOSTON — John Oliveira & Sons Stamp Concrete, Inc., a corporation which operates out of East Freetown, Massachusetts, pleaded guilty in federal court in Boston to willfully violating Occupational Safety and Health Administration (OSHA) safety standards in connection with a 2023 incident that resulted in a worker’s death.
According to the U.S. Attorney’s Office for the District of Massachusetts, after the company pleaded guilty during a hearing in U.S. District Court in Boston on Feb. 4, 2026, U.S. Magistrate Judge Paul Levenson scheduled sentencing for May 4, 2026.
According to court documents, the company used a large soil screener to process and screen soil and similar materials. The soil screener was about 46 feet long, 13 feet high and weighed about 35,880 pounds. Its tail conveyor, which weighed about 1,500 pounds, could be positioned vertically in a closed position or opened to about a 45-degree angle. Prosecutors said the tail conveyor had closed unexpectedly on multiple occasions in 2022 or 2023 and that the soil screener had previously experienced a ruptured hydraulic pressure line…