This Working Paper should not be reported as representing the views of the IMF.The views expressed in this Working Paper are those of the author(s) and do not necessarily represent those of the IMF or IMF policy. Working Papers describe research in progress by the author(s) and are published to elicit comments and to further debate.On occasion, a government may find itself confronted with a need to address a large contingent or off balance sheet fiscal liability. Implementing a settlement raises issues of fiscal sustainability and macroeconomic stability. This paper surveys the key design issues, and draws lessons from recent Eastern European experience. It then considers in more detail the particular case of Ukraine, and how it might approach its own large contingent liabilitythe so-called lost savings-which at end-2007 amounted to as much as 18 percent of GDP.