In 2010, Spirit airlines announced that it would start charging passengers for carry-on baggage. Using a vector of route level characteristics, we construct a matched group consisting of routes which best match those served by Spirit (treated group). We then run a diff-in-diff estimation using...

Whether and how the design and enforcement of laws exerts a profound influence on innovation activities has been the central subject of study in a wide spectrum of disciplines. This paper examines the role of the social insurance law in driving corporate innovation. We consider a simple model...