"We, families of the hostages signed below, turned to you, Mr Arnon Bar-David, because the negotiations are stuck, and this may cost the hostages in Hamas captivity their lives," reads the letter.
According to the federation, the purpose of the partnership was to grant freelancers and small business guidance and various benefits without payment for two years.
Families 2.0 - The Promised Podcast tlv1.fm - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from tlv1.fm Daily Mail and Mail on Sunday newspapers.
Operation Iron Swords globalsecurity.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from globalsecurity.org Daily Mail and Mail on Sunday newspapers.
Arnon Bar-David expresses hope that elections will come without a wave of protests, but says that "if the people take to the streets, the Histadrut will be there" | "The prime minister should first of all take responsibility; if I were him - I would resign."