The New South Wales Government is under pressure to explain why it has not changed the law to stop disgraced former Labor minister Eddie Obeid from receiving his parliamentary pension.

In December last year, then-premier Mike Baird said as soon as Parliament resumed in 2017, the Government would move to amend the Parliamentary Contributory Superannuation Act 1971.

The changes would mean former MPs who were charged with serious offences after they had left office would lose their superannuation.

The Government has still not amended the law.

Currently, only MPs who are charged with offences while they are in office lose their superannuation.

Greens MLC David Shoebridge is calling for Obeid's parliamentary pension to be stopped. ( AAP: Dean Lewins )

Greens MP David Shoebridge said it was incompetence on the Government's behalf.

"This is a man who potentially will be getting hundreds and hundreds of thousands of dollars of public funding, you know when we're making hard funding decisions about public education, to think that amount of public money is going to a disgraced former politician is itself disgraceful," he said.

Mr Shoebridge said the public had the right to know when Obeid would stop receiving his parliamentary pension.

"The general public already thinks politics is a pretty low art and they think that politicians are very loath to attack each other's entitlements," he said.

"I mean if you can't move on Eddie Obeid well it's no wonder that the public has that view."

Obeid was sentenced to five years in jail, with a minimum non-parole period of three years after his conviction for misconduct in public office in June last year.

Then-premier Mr Baird said the Government would move to recover taxpayer-funded legal assistance that was provided to Obeid in this particular case, once all avenues for appeal were exhausted. The figure amounts to more than $280,000.

A spokeswoman for the State Government said the legislation would be amended "as soon as possible".