Markups in Canada: Have They Changed and Why? Staff Working Paper 2008-7 Danny Leung 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. Content Type(s): Staff research, Staff working papers Topic(s): Econometric and statistical methods JEL Code(s): E, E3, E31, F, F4, F41, L, L1, L11