Former Unifor President Jerry Dias built a considerable automotive legacy in his eight-plus years leading the Canadian union.
Dias, who retired March 11, was influential in securing billions of dollars of investments for the country's assembly plants, helping to secure a Canadian manufacturing footprint that had been in danger of collapsing.
He loudly advocated for auto workers as a participant in North American trade talks during intense spats with automakers such as General Motors.
But the longtime labor leader has exited under a cloud of controversy that threatens to tarnish that legacy.
A day after announcing Dias' sudden retirement because of health issues, Unifor said its former leader was under investigation for an alleged breach of the union's constitution. The nature of the allegation is still unknown.
The union did not provide specifics, citing that the investigation was ongoing. Dias declined to…