Prime Minister Tony Abbott has spent $50,000 on sprucing up his private office at Parliament House.

Documents provided to the Senate show the Prime Minister’s dining suite has been re-upholstered, and new curtains installed.

A new lounge has also been purchased, with the entire renovation costing taxpayers $50,000.

Labor frontbencher Penny Wong has attacked the Government, saying it is clear the "age of entitlement isn’t over for some".

"The Prime Minister's office, I recall from when we were in Government, was perfectly adequate," Senator Wong told Radio National.

"But it's up to the Prime Minister to explain why, when the age of entitlement is over, he's spending money on curtains and upholstery."

But the Government says the upgrade began on Labor's watch.

"This work began under Labor in August last year," a spokeswoman for the Prime Minister said.

She said the purchase of the new chairs and the reupholstering began in August, before Mr Abbott's election to office.

The Prime Minister's office said the Department of Parliamentary Services said the improvements were "urgently required" because the Lodge was being repaired.

The spokeswoman said the room had "suffered significant wear and tear" because it has been previously used as a storage room.