About 14 paramedics yesterday marched down Liebig Street wielding placards to raise their concerns with South West Coast MP Denis Napthine.

They fear ambulance stations in the region's smaller towns like Mortlake and Terang will struggle to attract staff under a "raw" pay deal offered by the Government.

Warrnambool Ambulance Employees Association (AEA) representative Jock O'Connor said paramedics felt they were being paid unskilled wages.

"Ambulance officers are each doing about 11 weeks overtime a year mainly because we have to supplement a wage that doesn't really reflect our professional status," he said.

The Government offered paramedics a 12 per cent pay rise over four years which would be mainly made up using productivity gains.

But Mr O'Connor struggled to see how paramedics could be more efficient.

He said Victoria's ambulance service was stretched and another 350 paramedics were needed immediately.

The AEA has been negotiating with the Government since its previous pay agreement ended in July. The union wants paramedics to have a minimum 10-hour break between shifts and said many officers suffered fatigue on the job.

"We can't strike because we are an essential service," Mr O'Connor said.

"All we can do is let the public and the Government know that we are not happy and hopefully the Government will listen."

Health Minister Daniel Andrews' spokesman said he hoped the ambulance issue would soon be resolved.

"The Government and Ambulance Victoria are currently negotiating with the AEA to reach a balanced agreement that fairly rewards paramedics for their skills and continues to keep us best placed to meet the needs of a modern ambulance service and the community," he said.