AFP reported that workers at Fiat's historic factory in Turin have said yes in a referendum on the Italian company's new flexible work rules.
Officials of the FIOM metalworkers union, which campaigned against the contract, said that votes of white collar workers were key to the rules' approval, 54% to 46%.
More than 94% of workers at the Mirafiori factory voted when they came for their shifts Thursday and Friday.
Mr Sergio Marchionne CEO of Fiat had warned if a majority of workers didn't accept the new contract to produce vehicles in a joint venture with Chrysler, he'd take production elsewhere, possibly abroad.
Left wing FIOM opposed the deal as weakening Italy's system of national contracts, but other unions backed it as encouraging investment.