In a statement released late Sunday afternoon, the company said emergency personnel had responded at roughly 11:30 a.m. MT Sunday after an employee was severely injured while working.
The employee was transported to the Northern Lights Regional Health Centre where he was pronounced dead.
"This is devastating news and a tragic loss for family, friends and co-workers," said Mark Little, executive vice-president of Suncor. "Our thoughts and prayers go out to loved ones during this extremely difficult time."
Suncor is working with the RCMP and Alberta Occupational Health and Safety to complete a full investigation into the incident.
The name of the individual is not being released.