The BBC is set to cut up to 2,000 jobs as part of changes aimed at making savings of around 20%, sources have said.
The corporation will hold a series of meetings with its staff across the UK on Thursday when it will reveal details of its Delivering Quality First initiative.
Director-general Mark Thompson will unveil details of the cuts, with industry sources indicating it is likely that around 2,000 jobs will be lost.
Mr Thompson and the chairman of the BBC Trust Lord Patten will speak to staff for around an hour at 10am.
The BBC committed itself to saving billions of pounds from its budget after the annual licence fee was frozen at £145.50 for six years.
In an internal message sent to staff earlier this week, Mr Thompson said thousands of them had made comments and proposals over the past nine months as part of the process.
He said: "You brought us new ideas, caused us to adapt or drop some of our own early ideas, and helped us shape the final set of proposals which we've been discussing with the BBC Trust in recent weeks."
It has been reported the corporation is considering selling off its White City building in west London as it bids to cope with its new financial reality. Its best-known west London home, Television Centre, is already up for sale.
Earlier this year, Mr Thompson refused to rule out closing channels to save money but insisted there is "a smarter way of making savings".
It has also been reported that highbrow arts channel BBC Four could be a target for cuts and could merge some of its operations with its digital sister channel BBC Three.