QFL president Michel Arseneault says allegations against his union are being made by disgruntled members. (Jacques Boissinot/ Canadian Press)

The president of the Quebec Federation of Labour said Friday his union is not corrupt, dismissing a Radio-Canada report Thursday that alleged the group is associated with organized crime.

Michel Arsenault also denies the allegation that there is favouritism in the way the union's Solidarity Fund decides who will handle its investments.

Many of those investments went to Tony Accurso, who has been named in scandals involving civic politicians.

Arsenault defends his relationship with the controversial businessman.

"We have a return on investment of 13 per cent per year for the last 19 years with Mr. Accurso. So it's a very interesting business for us, and let me tell you that any bank, any Canadian bank would like to have that kind of customer," Arsenault said.

He said Accurso was never fast-tracked by the Solidarity Fund, and the decision to have him handle investments has to pass through auditors just like everything else.

Arsenault said he doesn't believe the people cited in the Radio-Canada investigation. He said they are just disgruntled members.

Arsenault said there is no interference from organized crime.

He said the union has been cleaned up over the last year, since the expense accounts of its former president were made public.