Unison members have already leafleted tenants on the Ferdinand estate in Kentish Town and the Strawberry Vale estate in East Finchley, informing them that they risk losing secured tenancies if they transfer.
Unison has also warned of higher rents and undemocratic control of the estates if a transfer takes place. It has accused the council of trying to railroad through the transfers.
Camden's housing committee chair, Brian Weekes, described the union's claims as 'absurd'. He said: 'All the details on the transfers aren't available yet, so we aren't asking anyone to make a decision.