Manitoba Premier Brian Pallister is hinting at a possible olive branch to public-sector unions, which are going to court to fight a government-mandated wage freeze.

Pallister's Progressive Conservative government is to introduce amendments to the province's wage-freeze bill in the legislature on Monday. He would not reveal details Friday, but said the changes will address at least some of the concerns expressed by unions.

"We've been listening, meeting with public-service representatives," Pallister said. "These amendments … will illustrate very sincerely that we've heard some of the concerns that they've expressed."

Pallister indicated the changes will not be likely to include the government backing off the wage freeze itself.

"The wage issue isn't the only issue that we can (be) negotiating on and bargaining on, so I'll just say that."

The Tories passed a bill in 2017 that mandated a two-year wage freeze for public-sector workers as each new collective agreement was negotiated. That would be followed by a .75 per cent pay increase in the third year and one per cent in the fourth.

The bill has never been proclaimed into law, but public-sector unions said government negotiators were treating it as if it had been and were refusing to budge on wages.

More than a dozen unions representing 110,000 government workers, nurses, teachers and others across the public sector filed the court challenge in 2017. They argue the bill violates their charter right to collective bargaining.

The court case is to start next month.

The Manitoba Federation of Labour appeared unmoved by Pallister's comments Friday.

"Manitoba's public-sector workers deserve to have their rights respected, not undermined through heavy-handed legislation by the Pallister government," federation president Kevin Rebeck said in a written statement.

"We continue to call on the government to repeal this unconstitutional law and begin meaningful public-sector bargaining."