F1 drivers are threatening to strike if their teams do not pay them.
Reportedly, that is because the Finn, who switched to Ferrari at the end of last year, still has not been paid in full by Lotus for the 2013 season.
It is believed that, under the auspices of their union, the GPDA, the F1 drivers have signed a document vowing to strike if the growing trend of not being paid continues.
Sport Bild claims that Raikkonen - not a GPDA member - and one of F1's very highest earners, Lewis Hamilton, have refused to sign the document.
Hulkenberg would not comment.
He admitted, however, that unpaid wages is an issue for the drivers.
"That's right. The teams are aware of the situation -- the driver can be easily replaced. Maybe not with the same quality, but they (the teams) do take advantage of that."
Hulkenberg also expressed some understanding for the situation of the teams.
"They are not doing it (failing to pay drivers) for fun," he acknowledged. "The money just isn't there. The sport is too expensive."
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