Treasurer Scott Morrison and broadcaster Ray Hadley have unloaded on each other over the performance of politicians, with the outspoken radio host alleging federal politics is populated by "bludgers and leaners".

In a heated interview, the Treasurer said the 2GB broadcaster was hurling misleading slurs and taking cheap shots, insisting the 27 sitting days of Parliament left in 2016 was not a sufficient indicator of all the work MPs do.

"You're assuming that nothing happens between sitting weeks and I know you don't think that. I know you know that between sitting weeks a lot happens," Mr Morrison said.

"In particular the sort of discussions that are necessary to secure the passage of bills through the Parliament. I mean the Parliament will vote but the work doesn't stop."