He also said he's heard Saskatchewan contractors are being barred from Alberta worksites because they don't have Wild Rose Country plates.
The Ministry of Highways is targeting Alberta specifically because it says Saskatchewan workers in Alberta feel forced to register their vehicles in order to work there.
Earlier Wednesday, Saskatchewan Infrastructure Minister David Marit announced that vehicles with Alberta licence plates will no longer be allowed on future government highway and building project sites.
"This is simply levelling the playing field", Marit said.
Bilous said the move "smacks of desperation".
"(Saskatchewan Premier) Brad Wall needs to smarten up.
The restriction will apply only to new contracts awarded by the Ministry of Highways and Infrastructure.
"Saskatchewan heavy construction contractors have been one of the largest employers in the province in good years and in bad", association president Shantel Lipp said in a release.
The Ministry of Highways will monitor job sites to ensure there is compliance. As local construction companies obtain a larger share of the Saskatchewan construction marketplace they develop the people, equipment and capacity to maximize their economies of scale.
Marit said that could mean the difference for Saskatchewan contractors whose bids come in close to two or three per cent higher than those from Alberta. That includes contractors, sub-contractors, consultants and workers.
There is no such rule, he said, and issued an ultimatum: Roll it back within a week, or Alberta will see you in court. "The new Saskatchewan policy could be problematic for industry because it would force vehicles to be re-registered and require insurance changes for even short site visits or work".
The Alberta government has set a deadline for Saskatchewan to revoke a ban on Alberta licence plates at job sites, or face a lawsuit.