The training and publishing charity the Directory of Social Change has put about 70 per cent of its staff on furlough because of the coronavirus pandemic.
The charity, which receives most of its funds from its events, publications and funding website, said its income had “almost completely dried up” for the time being.
But it said it was confident that this was a short-term situation and the organisation would “bounce back later in the year”.
The DSC employs about 35 staff and around 21 of those were put on furlough on Friday for an as yet undetermined period.
The government has pledged to cover up to 80 per cent or £2,500 per month, whichever is lower, of the salaries of workers put on furlough because of the coronavirus outbreak.
Debra Allcock Tyler, chief executive of the DSC, said in a message to charities: “We understand that many of you are in the same boat and our hearts bleed for you and those you are trying to serve.
“We will still be doing our level best to provide you with information and support to help you to both survive and continue your vital work, and we are working hard with sector colleagues to get more resources into our sector.”
She said the DSC’s skeleton staff would be performing activities including continuing to campaign with sector colleagues for support for the wider sector, maintain its Funds Online database and develop online resources to help people who are working from home.
The DSC has been among the voluntary sector bodies that have been vociferously calling for government support for the sector to help it to handle an estimated £4.3bn shortfall in funding over the next three months.
“We believe that we, and many of you, will get through this and we hope to be back up and running and fully staffed as soon as is possible,” said Allcock Tyler.