NSW Opposition Leader John Robertson says he is pushing for Eddie Obeid and Ian Macdonald to be expelled from Labor because they have brought the party into disrepute.

The former state MPs have already been suspended from the ALP in connection with allegations raised at the Independent Commission Against Corruption (ICAC).

Eric Roozendaal, who is still an MP, has also had to answer questions in the ICAC and has also been suspended from the ALP.

But Mr Robertson says Mr Roozendaal falls into a different category.

"I think most people accept that (is) a different set of circumstances," Mr Robertson said.

"The evidence that we've seen concluded just recently is extraordinary and it's for that reason that I've moved in this manner."