NUW: Qantas workers strike

About 300 Qantas warehouse workers across Australia are walking off the job today over the airline's push towards the casualisation of the workforce.

Staff in NSW, Victoria, Queensland, Western Australia and South Australia are striking for 24 hours.

National Union of Workers (NUW) industrial officer Adam Portelli says the warehouse staff are fed up with Qantas' refusal to protect permanent jobs and acknowledge the rights of casual employees.

"More and more Qantas jobs are made casual or contracted out, leaving workers feeling vulnerable," he said in a statement.

"This action isn't about a bigger wage grab, it's about ensuring that all workers, whether they are Qantas employees or labour hire workers, who perform the same work for Qantas, are paid the same."

The warehouse workers handle freight, passenger catering and replacement equipment and parts for the Qantas fleet.

Mr Portelli said the strike was unlikely to affect passengers as "ironically" a casual workforce would be brought in to fill the gaps as best as possible.

"It's certainly not our desire to inconvenience passengers but only time will tell," he said.