Canberra Bureau of Meteorology staff will walk off the job for one-hour stop-work meetings today, joining their colleagues across the country.
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A Bureau of Meteorology spokesman said services would be affected, but weather warnings and critical public safety information would not.
''I think it's very unlikely that the public will see a difference from the stoppage,'' he said.
The snap strike by bureau staff is the latest in a string of industrial disputes engulfing the federal public sector.
A planned Customs 24-hour strike from midnight last night is expected to cause major disruptions at international airports.
Canberrans heading overseas face considerable delays at Sydney and Melbourne airports, while delegations arriving at Perth for CHOGM could be held up.
Customs staff have been offered 9per cent over three years but Department of Immigration and Citizenship staff have won 11 per cent offers.
To add to travellers' woes, more than 10,000 Qantas passengers are expected to be hit by further flight delays, as negotiations between the airline and ground staff continue to break down.
The Transport Workers Union, which represents baggage handlers, catering workers and ground staff, announced yesterday it would hold meetings at airports around Australia tomorrow for one hour.
It warned that further industrial action was likely to follow.
Qantas said the action tomorrow comes after the union rejected the airline's new offer over pay and conditions for about 3800 staff.
The one-hour meetings are expected to cause 66 flights to be delayed by up to 70 minutes and will affect 10,100 passengers, Qantas says.
Meanwhile, the Community and Public Sector Union says the new wage offer put to Bureau of Meteorology staff is below inflation, and will leave them worse off than other APS staff. Staff have been offered increments over three years of 4 per cent, 3 per cent and 2 per cent, with a 1 per cent of base pay one-off ''productivity payment'' in July 2013.
A bureau spokesman said further discussions had taken place between management and unions since the offer was made.
But the CPSU says the offer would keep pay well below inflation and keep bureau staff underpaid compared with other APS staff.
Delegate Monica Long said staff on an APS3 to an EL2 level were being paid between 2 and 5 per cent less than their colleagues.
''With CPI running at 3.6 per cent, management's offer will leave us worse off after three years. Accepting a pay rise that does not keep up with inflation devalues our work and that's something we're not prepared to accept,'' she said.
''Bureau staff provide essential services to Australians yet our pay doesn't recognise our dedication, professionalism and skills.''
Bureau staff will rally in Melbourne outside head office at 11am.
with AAP