A fixed price policy regardless of expiration date may result in unsold inventory and sales loss. Price reduction over time as the expiration date approaches motivates customers to purchase all items, including the ones that are left with only a short interval until their expiration. We conduct...

Economists have usually called the proportion of the average wage gap between two groups which could not be explained by individual characteristics 'discrimination'. Recently, several theories have suggested that labour market discrimination, on the one hand, lowers the wages of the 'minority'...