This thesis covers three issues: the aggregate and welfare effects of environmental policies when plants are heterogeneous; what causes the different patterns of employment dynamics in small versus large firms over business cycles; and the welfare costs of expected and unexpected inflation. In...

We incorporate emission into a general equilibrium model with rich dispersion in productivity among monopolistically competitive plants. Emission is modeled as a by-product from goods production. An abatement technology is available to the plants for reducing emission. We compare an emission tax...

We compare the welfare effects of different emission-reduction policies in a general equilibrium model with heterogeneous plants. We found that an emission standard could outperform an emission tax or a tradable permit. We characterize the equilibrium conditions for this result to hold. We...

When a society wants to control aggregate emission under a certain target level, is it more desirable to impose a tax or a regulatory standard on emission? To answer this question, we explore a model where plants are heterogeneous in productivity and monopolistically competitive in the...