Sergio Perez says Giedo van der Garde is correct in challenging Sauber for reneging on a contract to offer him a 2015 F1 seat, saying drivers should 'stand up for their rights'.

Sauber and former reserve driver van der Garde are currently embroiled in a bitter contractual dispute after the Dutchman claimed he agreed terms to acquire a race drive for 2015, only for the team to sign Marcus Ericsson and Felipe Nasr.

Though van der Garde won his case in the Melbourne Supreme Court on Wednesday, Sauber promptly launched an appeal that has been thrown out. As such, Sauber now has three contracted race drivers for just two seats ahead of the Australian Grand Prix, which gets underway tomorrow.

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It is a motivation that has won the support of Perez, who made his F1 debut with Sauber in 2011 and scored three podiums in two seasons with the Swiss-based outfit. The Mexican driver says van der Garde is an example of why drivers should stand up for their rights in contractual disputes.

"It is something not good, but at the same time it shouldn't be the way people are treating drivers - it shows they should respect drivers. A driver can be quite powerful, the same as any person for the team. It is not fair when people are not treating you the way you should be treated, it doesn't matter if you are a driver or an engineer.

"If there is a contract, it should be respected, because there are rules and they have to be followed. Sometimes in F1, you hear stories of drivers having a contract with a team or drivers who are owed money for three and four years. Giedo is a good example, a driver should stand up for their rights, but not only drivers, whoever works in F1."