[...]We begin by explaining the three most commoncategories of value-at-risk models—equally weighted movingaverage approaches, exponentially weighted movingaverage approaches, and historical simulation approaches.Although within these three categories many differentapproaches exist, for the...

This paper studies changes over time in the incidence of labor tying. The existingliterature is successful in explaining the emergence of this institution, but contains thecounterfactual implication that there should be an increasing trend in labor tying. However,previous contributions have so...