Market disequilibrium occurs when market don't clear. Market disequilibrium is caused by external forces, causing imbalance between the quantity demanded and quantity supplied, at a given price. If a product is priced below the equilibrium, demand increases while supply decreases creating a market shortage. Alternatively, overpricing a product will reduce demand and increase supply, creating a market surplus. Factors such as sticky wages, government policies and some other social factors causes market disequilibrium.