Cristiano Ronaldo's signing at Juventus has caused industrial unrest among workers at a leading Italian car manfacturer.
Workers at a Fiat-Chrysler factory in southern Italy announced Wednesday a strike against Juventus football club signing star player Cristiano Ronaldo.
Fiat-Chrysler Automobiles (FCA) is controlled by the Agnelli family, whose significant holdings include Juventus, which announced a 112-million euro ($A177 million) deal for Ronaldo on Tuesday.
The USB trade union at the Melfi plant said in a statement that it was "unacceptable" to spend so much money while "for years workers have been asked by the company to make huge economic sacrifices.
"Is this fair? Is it normal that one person should earn millions and thousands of families should run out of money mid-way through the month?" USB said.
The union called on FCA to invest more in car production to sustain factory jobs, and called a strike.
The Melfi plant, about 320km southeast of Rome, produces the Fiat 500X and Jeep Renegate SUVs, as well as the Fiat Punto hatchback, which is about to be phased out.