This paper studies the implications of monopsony power for optimal income taxation and welfare. Firms observe workers …' abilities while the government does not and monopsony power determines what share of the labor market surplus is translated into … profits. Monopsony power increases the tax incidence that falls on firms. This makes labor income taxes less (more) effective …

concave tax schedule raises the elasticity of labor supply, which boosts wages. Consequently, optimal marginal tax rates for …In a Mirrleesian environment, a monopsonist sets hourly wages and individuals choose how many hours to work. Labor …

. Even at the intensive margin, we find that the elasticity for women exceeds that for men. For men and women in the … Netherlands, we predict an uncompensated labour supply elasticity of 0.1 (or 0.2 if an alternative specification is preferred) and …

majority teachers grade minority and majority students differently for the same work. Using an experiment, I rule out the …

-complex tasks remain largely unknown. I expand the teacher incentive literature through a field experiment measuring how repeated …

We conducted a field experiment to examine the effects of student feedback to teachers at a large Dutch school for … feedback. Additionally, we asked all teachers before as well as after the experiment to assess their own performance on the … a year later. Only those teachers whose self-assessment before the experiment is much more positive than their students …