Journalists at El Mundo, Expansión and Marca, and staff across publisher Unidad Editorial, began a second full day (24 hours) of strike action at 7 a.m. on Tuesday morning, after failing to reach a deal with management at the weekend.
Workers committees posted videos on Facebook of empty newsrooms this morning, and said on Twitter that the latest offer from management was "not enough" and "not serious".
"The workers at El Mundo will continue to defend our positions and our newspaper, even though mangers do not."
The company had improved its lay-off offer slightly, including voluntary redundancies at 33 days pay per year worked, up to maximum of 18 years, and an early retirement plan for those aged 58 and over, at 60% net salary, compared to those aged 59 and over in the first round.
Forced lay offs will be paid at 30 days pay per year worked, up to a maximum of 12 years.
The first 24-hour strike last Tuesday, which unions labelled "historic", meant that the websites were not updated with news and that El Mundo did not go to print on Wednesday, the first time that had happened due to industrial action.