Kenny Dalglish has joined Manchester City boss Roberto Mancini in criticising the Premier League schedule over the festive period.
Mancini expressed his displeasure at having to face Liverpool just 51 hours after losing 1-0 to Sunderland.
Liverpool manager Dalglish said that it is an issue that requires attention from the PFA.
"I think Roberto made a great point here after our game when he said the players' union should be the one canvassing for the players," said Dalglish.
"If the games are coming up thick and fast, then what do the players' union think of it?"
Dalglish acknowledged, however, that the festive schedule is largely in the hands of television companies.
"I think TV has been massively helpful to many people in the Premier League, ourselves included. So we can't bite the hand that feeds us," he said.
"There has, though, got to be a bit of common sense. I think a game on the first and the third is a bit unreasonable really.
"I think in general there's got to be a reasonable amount of time for the players to recover."
Liverpool travel to Premier League leaders Manchester City tonight (Tuesday).
