The comments came after the company, which took over Italian rival Indesit last year, said it would cut a further 480 jobs on top of the 1,350 already announced.
The redundancies will affect those working in factories and research centres across the country, with almost half of the jobs being axed in Italy's impoverished south, where unemployment is among the highest in Europe.
The company has been in negotiations with unions since announcing its restructuring plan in April. Guidi called for the parties to reconvene but only if Whirlpool submits new “credible and tangible” proposals, Rai News reported.
The redundancies come despite a pledge by the company to invest €500 million in Italy over the next five years.
Workers at a factory in Caserta, Campania, are planning to strike on Friday.