Aussie airport worker strike resumes following suspension in wake of Brussels attack

Australia's Community and Public Sector Union (CPSU) resumed rolling strikes at international and domestic airports on Wednesday a week after suspending industrial action over the Easter break at the behest of Prime Minister Malcolm Turnbull in the wake of the Brussels terror attacks.

The airports affected include Sydney, Perth, Brisbane, Cairns, Townsville and Darwin.

Australian Immigration Minister Peter Dutton has stepped up calls for the nation's public sector union to stop its rolling strikes across the nation's airports, saying the threat of terrorism post the Brussels attacks remains.

"The threat hasn't passed within a couple of days following the Brussels attack," Australian Immigration Minister Peter Dutton told Australia's national broadcaster.

"These rolling strikes aren't welcome and I hope they come to an end sooner than later," he added.

CPSU national secretary Nadine Flood told reporters in Sydney, as stressed last week, officers involved in national security were always exempt from striking.

"As the prime minister acknowledged last week, this industrial action by border protection and agriculture staff does not risk people's security, national security or counter-terrorism effects," Flood said.

Australian public service sector are striking as part of a two-year negotiating battle with the central government over pay and work conditions. The union stresses they aren't seeking additional improvements, just continuation of their current pay and conditions.

"No-one listening to their concerns for their livelihoods and their families after two years of attacks on their rights and pay," Flood said, adding "They strongly believe that this is the only way of getting the fair deal they deserve."

The action follows last week's stop work measures by social services workers. Endit