The Victorian Government says it will not comply with an Upper House motion compelling it to release the contracts for East West road tunnel.

Late last night, nine of the 10 crossbenchers who hold the balance of power in the Legislative Council voted with the Coalition to compel the Government to release the documents by midday today.

The Government is currently locked in negotiations over compensation with the companies that were contracted to build the project by the previous Napthine government.

Premier Daniel Andrews promised to release the contract immediately after the election, but that has been delayed because of the ongoing negotiations.

Treasurer Tim Pallas said the Government would not jeopardise those talks.

"They won't be released one second before they're ready to go out and before the taxpayers interests have been effectively protected," he said.

"The Liberals shouldn't be focussed on stunts of this nature.

"They had their opportunity to release all documentation that would have demonstrated exactly what a cynical exercise this project was. They chose not to.

"Quite frankly it is breathtaking the hypocrisy of the Greens that they would jump into bed again with the party that sought to impose this dud tunnel on the people of Victoria is amazing.

"Those parties that are not involved in the negotiation should put the interests of Victoria first, not their cynical political opportunities."

But Opposition Leader Matthew Guy said the Government could face a censure motion if it did not release the contracts today.

Mr Guy said Labor's leader in the Upper House, Gavin Jennings, could face serious consequences.

"He could be suspended from the chamber, possibly indefinitely," Mr Guy said.

"The Coalition parties will not rest until this Government keeps the promises it made in November."

The Government has said it would consider introducing special legislation to void the East West Link contracts if it could not reach a settlement with the East West Connect consortium, in order to avoid a compensation bill that could reach more than $1 billion.

On Wednesday it was revealed the consortium was taking legal action in the Victorian Civil and Administrative Tribunal to force the Government to sign off on the construction plan.