This paper presents empirical evidence on the impact of competition on firm productivity. Using firm-level observations … competition and our measures of productivity. We also find that countries that implemented product-market reforms had a more … pronounced increase in competition, and correspondingly, in productivity: the contribution to productivity growth due to …

of imperfect competition among workers facing an heterogenous labour demand ; the second model illustrates imperfect … competition among firms that are heterogenous with respect to skill requirements. Both models are an application of vertical …