This paper uses a synthetic control method (SCM) and a Ridge Augmented SCM to estimate the impact of holding the Tokyo Olympic games on the number of newly confirmed COVID-19 cases in Tokyo (Japan). Our analysis with these methods enables us to estimate the causal impact of the Tokyo Olympics on...

By using data on more than 38,000 log auction transactions from market in Shizuoka Prefecture, Japan, we estimate whether there is a price premium for certification of sustainable forest management. We found a positive and significant effect of certification for logs, especially in the smaller...

Under asymmetric information conditions regarding worker productivity between current and prospective employers, a worker's promotion signals his/her productivity. In this Paper, we tested the signalling role of promotion, using Japanese micro-level data. We found that among lower-level...