The quarantine requirement for short-term business travelers will be cut to as little as three days for vaccinated visitors, from 10 days now. Companies and organizations receiving foreign nationals will be required to monitor their activities. The shorter quarantine requirement will also apply to Japanese nationals returning from business trips abroad. [...] The eased rules will apply to new visitors. Companies, schools or other receiving organizations will need to report on their infection control measures to a relevant government agency. Tokyo is prepared to reimpose tighter controls quickly if new variants emerge overseas.