The state's paramedics will hold a stop work meeting this morning in response to a stalemate in wage negotiations with St John Ambulance.
Liquor Hospitality and Miscellaneous Union assistant secretary Carolyn Smith said the meeting marks a month of industrial action that has seen "virtually no progress" made in the negotiation for a new agreement.
"It's been four weeks since the last stop-work meeting and nothing has changed," Ms Smith said.
The state's largest union, which is calling for a restructuring of paramedics' working conditions to bring them in line with WA's registered nurses, recently called on the state government to take control of the ambulance service, accusing it of profiteering by overcrowding emergency departments.
Today's stop-work meeting comes after St John Ambulance took the LHMU to the Industrial Relations Commission over the weekend, in a bid to have the bargaining period cancelled.
"Public safety has not been threatened during the industrial action campaign, and this remains the case for today's meeting and further action," Ms Smith said.
St John Ambulance WA chief executive Tony Ahern, who said the organisation had initially agreed to the 15 per cent pay rise over three years, vehemently refuted the union's claims of profiteering and said WA's paramedics were some of the best paid in Australia.
More than 100 paramedics are expected to attend today's meeting and about 10 ambulance vehicles will be off the road as a result.