Fund reports a return of 18.3% for its latest financial year, its best showing ever.
The Ontario Liberals say its time to take action since the federal Conservatives refuse to enhance CPP.
Report points to steep costs, far-off benefits.
Sixty-five per cent of the Canadian workforce has no pension plan besides CPP.
Old-age security eligibility raises to 67, throwing a wrench in the retirement plants of many Canadians.