In economics, forced saving occurs when the spending of a person is less than their earnings, due to the consumer goods shortages which can cause hyperinflation.
Forced saving can also happen when available goods are too expensive, therefore a person who has no access to credit has to accumulate the money for their purchase over an extended period of time.
[1] Forced saving holds a major role in describing how expansionary monetary policy in turn can cause artificial booms.
Example of the first mentioned situation could be forced savings of households caused by massive consumer goods shortages in Russia during 1991.
Over time, these investments will be seen to be errors and the liquidation process that occurs is what will in turn lead to a recession and a boom bust period cycle.