West Australian Labor Leader Mark McGowan is capitalising on the latest dispute within the state government over a budget commitment.
Several National Party MPs have expressed concern over the decision to force 457 visa workers to pay thousands of dollars for their children's education.
The Nationals say businesses in communities outside of Perth will lose workers.
Opposition Leader Mark McGowan has suggested the wheels are falling off.
"This was a decision made by the Cabinet, made up of Liberal, and National members and now you find them unravelling. It was a poor decision," he said.
"The government is in disarray, the Nats and Libs are fighting, I think that they're falling apart, quite frankly."
The Education Minister has said details around the implementation of the 457 visa contribution are still being worked through.
Nationals MLC Martin Aldridge says communities outside of Perth would be hit hard if businesses lose workers.
"Communities that have concentrations of 457 visa families are quite concerned about the decision," he said.
"It's good to see the government's signalled that they're reviewing the decision.
"I've written to the minister and suggested a couple of ways in which they could do that.
"One is by means testing the fee and probably the one I would like to see implemented is prospectivity in relation to it only applying to new 457 families who come to Australia."