No sympathy for Thomson from Labor MPs

There's little sympathy left in Labor's ranks for former MP Craig Thomson, with two MPs saying he should face the full weight of the law when he's sentenced later on Tuesday.

Mr Thomson, 49, faces up to five years in prison for misusing $24,538, including more than $5500 on prostitutes, while he was national secretary of the Health Services Union (HSU).

Labor frontbencher Tony Burke said the law had been broken.

"Then the full force of the law should come down. It's as simple as that," he told reporters in Canberra.

NSW Labor MP Michelle Rowland said Mr Thomson had put his case and that had been dealt with.

"The full force of the law can and will be applied," she said.

"What has happened has been a really sorry episode in terms of what happens when you betray people who put their trust in you."

Ms Rowland said low-paid HSU workers had a right to be angry.

"I actually just think it is a really sorry episode," she said.

Liberal minister Christopher Pyne said his sentencing would not be a cause for celebration on the coalition side.

"The whole Craig Thomson scandal has been a stain on the Labor Party, a stain on the union movement," he said.

"Stains on the other major political party and on the union movement are not cause for celebration."