Amtrak spokesman Cliff Cole says two other workers were seriously injured when they were hit by a northbound Amtrak Acela train at 1:15 p.m. on Thursday.
Two of the workers are Amtrak employees, while one works for a contractor. No other information was immediately available on the person who was killed.
The injured workers were sent to a hospital.
None of the 169 people on the train were hurt. Train traffic was temporarily halted in both directions at the accident site, and the MBTA was running bus service between Providence and South Attleboro.