Roger Federer has called for the Grand Slams to up their levels of prize money and said players are "bored' of having to push the issue.
The subject has been raised at the Australian Open after Novak Djokovic reportedly initiated a players-only meeting on the eve of the tournament.
Federer, 36, is a former president of the ATP player council, the same position Djokovic now holds.
"They could definitely pay more, no doubt about it," Federer said.
In 2012 there was talk of a player boycott if the major tournaments did not take action to increase prize money.