The Community and Public Sector Union says thousands of public servants 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 on Monday.

And Immigration and Border Protection officers will begin stoppages at international airports from Tuesday, with a 24-hour strike planned for Thursday.

The campaign is part of a long-running industrial dispute with the federal government over work conditions.

CPSU national secretary Nadine Flood says Prime Minister Malcolm Turnbull has ignored the union’s offer of talks to discuss the issue and that industrial action could continue at airports for several weeks.

Airline passengers are urged to contact their carrier for information and to allow extra time for internatioal departures and arrivals.

AAP