BBC staff members have voted in favour of strike action in a dispute over pensions.
Bectu and the National Union of Journalists said more than 90% of members had voted for a walk out.
But the unions said the decision on whether to strike would be postponed for two weeks while it discussed alternative proposals with the BBC.
In June, the BBC announced plans to overhaul its pension scheme to try and tackle a £2bn deficit.
Jeremy Dear, general secretary of the NUJ, said: "This is an unprecedented result in favour of strike action and a clear rejection of the BBC's proposals.
"We have agreed to give the BBC two weeks to come back with an improved offer or face a concerted campaign of industrial action."