The Camden New Journal (p2) reports that a few weeks ago Unison backed out of the tribunal saying that the costs of the action were too high.
The case followed the imposition of new staff contracts two years ago. Camden dismissed 2,000 staff and re-employed them under new contracts - which led to 580 staff making claims of unfair dismissal.
Unison branch secretary Dave Eggmore said: 'Camden's decision to press for costs is remarkable, especially since we have withdrawn our case. It is bound to be seen by members as a mean and vindictive attack.'
Camden's finance committee chairman John Mills said: 'We have obligations to the taxpayers though we don't want to fall out with staff.'