The largest strike in the public sector's two year industrial battle is set to disrupt the Easter travel plans of thousands of travellers across Australia.
The first round of industrial action will begin on Monday when staff at Medicare, Centrelink, the Tax Office, Defence, the Bureau of Meteorology, the Department of Prime Minister and Cabinet and the Bureau of Statistics, will strike for 24 hours.
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Strikes set to affect Easter travel
A large public sector strike will affect Easter travel, along with access to other government services. Courtesy ABC News 24
Immigration, Border Protection and Agriculture workers will then walk off the job at international airports for 24-hours on Thursday March 24 - the day before Good Friday.
A campaign of rolling airport stoppages for several weeks over the Easter school holidays and beyond will escalate the action.
The Australian Public Service's main workplace union, the CPSU, acknowledged the strikes would have "some impact" on contacting Medicare and Centrelink and for travellers at international airports.
Union leader Nadine Flood advised passengers to allow extra time when departing and arriving for flights and to contact the airline to find out who will be affected.
"That's unfortunate, but two years into this dispute, these workers still face an attack on their family-friendly rights and other conditions of work," she said.
"The extent of this mess is underlined by the fact that after two years more than eight out of 10 people working in the public sector still don't have a new agreement."
The strikes, which were announced nearly three weeks ago, aim to pressure Prime Minister Malcolm Turnbull and Employment Minister Michaelia Cash, who also runs the Public Service portfolio, to end the wage dispute with much of the 152,000 public servants.
Ms Flood said the action was confirmed after the Prime Minister "ignored... requests for urgent talks to fix his Government's bargaining mess."
"Domestic Violence leave has been removed from some agreements like in the Prime Minister's Department," she said.
"We've also seen government refusing agencies permission to add domestic violence leave or any other improvements to agreements in dozens of agencies."
She stressed that repeated strike action is tough on families, particularly after a two-year wage freeze.
A spokesperson from Senator Cash said it was unfortunate that the CPSU had resorted to strike action.
"This can cause harm to the public and involves a loss of pay for employees," they said.
"Instead of resorting to industrial action the CPSU would better serve the interests of their members if they were to genuinely negotiate in good faith."
Earlier this month, Senator Cash also condemned the upcoming strikes as "unfortunate, ill-conceived" and "counterproductive".
Work stoppages were held by ABF and Immigration staff in September at airports in Sydney, Brisbane, Perth, Adelaide, Darwin, Cairns, and the Gold Coast.
There were reports of significant delays at Sydney, Perth and Cairns airports as managers from the department were rushed into uniform and into frontline roles in what was dubbed a "surge deployment". More actions in November resulted in airport operators calling for the parties to settle their differences.
In the latest string of rejected bargaining proposals that have been rumbling on since 2014, Agriculture Department staff voted no for the third time - an occurrence thought to be unprecedented in the history of the APS - while Immigration Department and Border Force workers overwhelmingly rejected the second proposed agreement.
These followed no-votes at the Tax Office, Human Services and a narrow rejection of a deal at Defence. Staff at Prime Minister and Cabinet also voted down an enterprise agreement last month.