Kallis has been plagued by an elbow injury in recent times

Under the plan, each team must play the other nine Test sides in at least two Tests and three one-day internationals at home and away every six years.

"Five or six guys in the leading sides play Tests and ODIs and are being flogged," he said.

"For all-rounders it is definitely too hard a schedule. It's killing them."

Kallis believes more should be done to preserve the star players and ensure that they do not leave the international arena prematurely through injury and fatigue.

"They are the ones who make a difference between a 10,000 crowd and a sell-out," he said.

"Teams are going to end up resting their top players, but the public want to see them so it's a big problem."

Kallis, 31 in October and a veteran of over 100 Tests and 200 ODIs, is concerned that the genuine all-rounder may disappear from the game.

"Young players won't want to be an all-rounder if they see how quickly you get worn out," he added.

"It would be better to go down the route of being a specialist batsman or bowler."