Public servants at the bureau are planning to bring MPs and senators down to earth by denying weather forecasts to Canberra Airport at times when the politicians are descending on the national capital.

But Parliamentary Secretary for the Environment Bob Baldwin says denying weather forecasts to Canberra Airport would hurt the airlines, but not the intended target; the MPs, Senators, staffers and other political operators who surge in and out of the capital for parliamentary sitting weeks.

The bureau delivers a number of aviation forecast services to the airline industry which include Aerodrome Forecasts which are used by airlines to tell how much fuel they need for each flight, according to Mr Baldwin's office

The forecasters are to vote on a range of industrial action including withholding the TAFs to Canberra at times when they know the politicians are descending on the capital for sittings or hurrying out of town after a parliamentary session.

The bureau's 1700-strong workforce's enterprise agreement expired nine months ago, they have had no pay rise since June 2013 and there is no sign of a fresh offer.

The weather men and women are growing impatient, according to the technical union Professionals Australia, and are keen to bring their grievances to the notice of federal decision-makers.

But Mr Baldwin is unfazed by the threat, saying that airlines denied a weather forecast for Canberra could simply load up the plane with enough fuel to divert to another destination in the event of poor weather over the Australian Capital Territory.

"The safety and arrival of flights into Canberra, or any other city, won't be affected by proposed industrial action from Professionals Australia," Mr Baldwin said on Friday.

"Bureau staff do an excellent job providing weather services and information to the airline industry across the nation and we'll continue to work with them on a fair pay offer.

"The union needs to stop playing with the sterling reputation of the bureau officers and negotiate a good agreement for their members.

"Contingencies are in place to continue to provide the information required should any action go ahead."

The Fair Work Commission gave consent on Wednesday for a ballot of the BoM workforce on various forms of industrial action including targeting the capital's airport on sitting weeks and to read out their messages on radio.

Other actions on the table include work bans of up to 24 hours, a refusal to post on the bureau's Twitter feed and a ban on answering all non-essential media inquiries.