The industrial action from 4am on Wednesday to 4am on Thursday is a push for better pay and conditions for the workers employed by the Rivet Group, The Transport Workers’ Union said.

The strike was expected to impact some aircraft refuelling operations at Melbourne Airport, an airport spokesman said.

However, most flights would operate as scheduled, and passengers were encouraged to go to the airport as normal unless contacted by their airline.

There was minimal impact to operations at the airport on Wednesday morning.

Rivet services major freight and passenger airlines including Qantas, DHL, Cathay Pacific, Singapore Airlines, Fiji Airways and Qatar Airways.

Qantas has a contract with ExxonMobil to provide fuel for flights out of Melbourne. The oil and gas company then subcontracts Rivet to refuel aircraft.

Qantas was not expecting any material impact to its flights on Wednesday after its operations team put in workarounds, a spokeswoman said.

The workarounds included flying a spare A380 from Sydney to Melbourne with the maximum amount of fuel it could carry and using it to fill up other aircraft.

The airline was also carrying extra fuel on flights into Melbourne to minimise the refuelling that needed to happen, and making the most of remaining refuelling capacity including tapping into other providers.

“We have also worked closely with Melbourne Airport and other industry partners to minimise any impact on customers,” the spokeswoman said.

TWU Victoria assistant branch secretary Mem Suleyman said Rivet should respond to workers’ reasonable requests for recognition and sustainable pay and conditions to avoid disruptions to flights out of Melbourne.

“For a year, Rivet refuellers have tried to reach a fair agreement but have instead been faced with base wage freezes which impact their pay now and long into the future,” he said.

“In the current cost-of-living crisis it is unacceptable to expect workers to pick up extra responsibilities and work harder, faster and longer to make ends meet.”

Suleyman said that the workers were in one of the most dangerous jobs in the airport, yet they were being pushed to the limits while pay and conditions failed to attract more people to share the load and industrial action was the only option left to bring the company to a fair and sustainable agreement.

Rivet Aviation was “extremely disappointed” it could not reach a conclusion to discussions, and it understood that would have a detrimental impact on travellers, the company said in a statement on Wednesday.

However, it could not agree to claims put forward by the union and continue to operate viably, it said.

“Our business has battled through COVID and struggles to be profitable today, let alone implementing the immediate 12 per cent increase in wages being demanded,” Rivet said in the statement.

“We are one of the highest paying companies in this space in terms of salaries and like most companies we are beholden to existing contracts with our customers who are large multi-national businesses.”

The union’s decision to strike would only ultimately see the business fail and put employees out of a job, the company said.

-with AAP