MONTREAL -- SNC-Lavalin Group Inc. says it is making a limited-time offer of "amnesty" to whistleblowers within its workforce.

The Montreal-based engineering giant says it won't seek damages or unilaterally fire employees who voluntarily provide a full, truthful report about potential corruption and anti-competitive activities.

To qualify, an employee must file a request with SNC's chief compliance officer between June 3 and Aug. 31.

The amnesty won't cover executives in SNC's Office of the President, its management committee groups or anyone who directly profited from a violation.

SNC is undergoing both internal and police investigations for alleged fraud and corrupt practices in Canada and abroad by some former employees.