"The strength of numbers here at Pacific Quay in Glasgow underlines the feeling among staff.
"It`s not just about cuts to colleagues' jobs, people being forced, it's also about the impact on the licence payer."
BBC radio and TV news programmes have been badly affected by the walkout, with the flagship Radio 4 Today programme replaced with pre-recorded features. National and regional TV news bulletins were also hit.
The BBC said it was "disappointed" with the industrial action, adding that it would not alter the fact that it has to make "significant" savings.
A spokesman said: "We understand how frustrating and difficult situations involving redundancies can be, but it is disappointing the NUJ have chosen to take this action."