Members of the National Union of Journalists (NUJ) went on strike at midnight today, causing Radio 4's flagship Today programme to run at a reduced duration from 7am to 9am.
The BBC said that there will be a repeat of You And Yours in place of the billed edition at noon on Radio 4, while a news summary and Soul Music will replace The World At One. There is also expected to be disruption to various TV programmes over the day.
This latest strike follows industrial action staged on July 15 that disrupted the BBC's television and radio programming. The NUJ staged the action after claiming that BBC management had "refused to take the necessary steps to avoid compulsory redundancies in the corporation's news teams".
A total of 387 posts are due to be lost in BBC Monitoring and the World Service this year following government funding cuts. Reports have also indicated that more than 1,000 jobs could ultimately go at BBC News offices across the UK and overseas, with the majority coming in reporting roles. Four people have so far left the World Service after being made compulsorily redundant, with a further 43 due to leave today.
The union said that the BBC is "wasting thousands of pounds making skilled and experienced people compulsorily redundant instead of redeploying staff".
It pointed to the example of an NUJ member who had worked at the BBC for "many years until being unceremoniously escorted from the building" on July 22.
"The member has specialist language skills and a matter of hours after he was dismissed another member of staff was asked to cover work which would have previously been done by the member," claimed the NUJ.
"Yet the BBC says there is no job for him. Days after his dismissal the BBC externally advertised three posts in the specialist language of the same NUJ member."
The NUJ is demanding that the BBC give access to internal BBC jobs for those who have been made redundant, and is also calling on the corporation to extend the leaving dates of those facing imminent compulsory redundancy.
NUJ general secretary Michelle Stanistreet said: "The BBC's current actions spell disaster for quality journalism. The corporation is wasting thousands of pounds making hard working, skilled and experienced journalists redundant. Instead they should be adopting alternative solutions and redeploy those who are threatened. No one should be forced out of work when there are jobs available for journalists to do.
"By taking strike action members intend to show they are prepared to stand up for colleagues under threat and the union is calling on the corporation to step back from the brink and avoid further industrial action in response to compulsory redundancies at the BBC."
BBC management is scheduled to meet with all the broadcasting unions - including the NUJ - on August 11 to discuss the corporation's approach to compulsory redundancies.
In a statement, the BBC said: "We are disappointed that the NUJ has gone ahead with today's strike and apologise to our audience for any disruption to services.
"Industrial action does not alter the fact that the BBC is faced with a number of potential compulsory redundancies following significant cuts to the central Government grants that support the World Service and BBC Monitoring.
"We will continue with our efforts to reduce the need for compulsory redundancies, however, the number of posts that we are having to close means that unfortunately it is likely to be impossible for us to avoid some compulsory redundancies."
The NUJ's strike will last for 24 hours on Monday, followed by an "indefinite" work-to-rule immediately afterwards, meaning participating employees will only work their contracted hours. The union previously held a 48-hour strike in November last year in protest at changes to the final salary pension scheme.