Fiat SpA CEO Sergio Marchionne

Fiat SpA CEO Sergio Marchionne

Giuseppe Aresu/Bloomberg Caption

Fiat SpA's Chief Executive Officer Sergio Marchionne is also prepared to shift production of its best-selling Panda model from Poland to the under-utilized Pomigliano plant in Italy and invest 700 million euros in the factory if unions agree to a plan that includes adding shifts and instituting a six-day work week.