Many empirical studies have examined the cyclical nature of the markup ratio. Until recently, few have attempted to ascertain the changes in the markup over a longer time horizon. These changes are of no less interest in view of the posited effects of increasing import competition and lower...

This study uses a confidential Census sample of 151,900 U.S. manufacturing plant-years from 1974-2011 to investigate the impact of excluding the costs of unused capacity from key financial indicators, namely product costs and gross margins. We estimate the magnitude of unused capacity cost as a...