On 15 July 2020, authorities raised Tokyo’s COVID-19 risk level to the highest level on a four-tier scale due to a consistent rise in confirmed cases. The rating does not trigger any enforceable actions. However, Tokyo Gov. Koike Yuriko urged businesses to enforce measures to limit the spread of the disease, including requiring staff and customers to wear face masks, conducting temperature checks and sanitizing work areas frequently. Koike also urged residents to avoid businesses that do not implement precautions as well as to avoid nonessential travel outside the city.