Paramedics are joining nurses and midwives, taking industrial action across NSW this week as they lobby for better conditions and the "resources to do our jobs".
From Wednesday midnight, paramedics will refuse to move from their stations to fill gaps in rosters.
The Australian Paramedics Association President Chris Kastelan says the action on Thursday should come as no surprise to the premier or his government.
"We've been telling them for years that we're fatigued, too thinly resourced, and at risk of burning out," Mr Kastelan said.
"We're asking for the resourcing we need to properly do our jobs, and a wage to reflect the skill and professionalism we bring to the role."
The union wants 1,500 more paramedics on the road, a pandemic payment and a pay rise of more than 2.5 per cent.
It also is seeking a large investment in specialist paramedics and referral networks to improve services.
It comes after thousands of nurses rallied outside NSW Parliament on Tuesday, as well as 25 locations around the state and the NSW Nurses and Midwives Association says members support of taking further action.
Mr Kastelan said paramedics have "been asked to dig deeper, work longer, and sacrifice more than before".
"For two years, we've been doing the impossible, and we've been doing it with grit and fortitude to show up for our communities," he said.
"But something has to give.
"If the government refuse to act on resourcing and pay, they will find themselves facing down a mass exodus of qualified, experienced clinicians."
Premier Dominic Perrottet says the government "hope that we can provide a resolution" but the issues are "complex".
