Several hundred union members at Nine mastheads The Sydney Morning Herald, The Age and The Australian Financial Review will stop work from the first newsroom shift in the early hours of Thursday morning for 24 hours.
Journalists are pushing for a 15.5 per cent pay rise over three years, but Nine management has offered a one-year deal with a 3.5 per cent increase.
The strike could stretch into a 48-hour stoppage if progress is not made, Mark Phillips from the Media Entertainment and Arts Alliance has confirmed.
"The ball is in management's court to make a better offer," he told AAP.
Other sticking points include automatic grading progression for junior reporters, minimum standards for freelancers and recognition of a charter of editorial independence.
In August Nine announced record profits for 2021/22 with a statutory net profit of $315 million, up 71 per cent on the previous full year.
Its publishing division, including mastheads The Age and The Sydney Morning Herald, saw pre-tax earnings lift 53 per cent to $62 million.
The company also paid a record dividend to shareholders of 14 cents per share.
The results released a fortnight ago have hardened the resolve of union members, Mr Phillips said.
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