Competition has been modelled in economic literature in a number of ways. What do these different parameterizations of competition have in common? For instance, it turns out that it is not always the case that a rise in competition reduces price cost margins, industry wide profits or...

We model how unemployment benefit sanctions - benefit reductions that are imposed if unemployed do not comply with job search guidelines - affect unemployment. In our analysis we find that not only micro-effects concerning the behaviour of individual unemployed workers are relevant, but also...