Although F1 is bringing in a $145m budget cap from next season, drivers' salaries are exempt on a lengthy list. It is under discussion, though, for potential introduction at some point in the future.
It has sparked considerable debate amongst the drivers, with Grand Prix Drivers' Association director Grosjean raising eyebrows at Hamilton's reported salary, but also recognising there is a downside that could affect future talent coming through.
"We had this talk in the GPDA," said Grosjean during a French media session ahead of this weekend's Austrian Grand Prix, and as reported by Autosport.
"Some were in favour, others were against. I do think it's unacceptable that Lewis Hamilton earns more than $40million while some drivers earn €150,000 a year for the same job."
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